Frot (English Wikipedia)

Kelly, Jeffrey A (October 1995). "Advances in HIV/AIDS education and prevention". Family Relations. 44 (4). National Council on Family Relations: 345–352. doi:10.2307/584989. ISSN 0197-6664. JSTOR 584989.
Bell, Robin (13 February 1999). "Homosexual men and women". BMJ. 318 (7181): 452–5. doi:10.1136/bmj.318.7181.452. PMC 1114912. PMID 9974466.
Rosenberger, Joshua G. (2011). "Sexual Behaviors and Situational Characteristics of Most Recent Male-Partnered Sexual Event among Gay and Bisexually Identified Men in the United States". The Journal of Sexual Medicine. 8 (11): 3040–3050. doi:10.1111/j.1743-6109.2011.02438.x. PMID 21883941.
de Waal, Frans B. M. (March 1995). "Bonobo Sex and Society" (PDF). Scientific American. 272 (3): 58–88. Bibcode:1995SciAm.272c..82W. doi:10.1038/scientificamerican0395-82. PMID 7871411. Archived from the original (PDF) on 27 January 2012. Retrieved 21 December 2011. They also practice so-called penis-fencing, in which two males hang face to face from a branch while rubbing their erect penises together. ...Perhaps the bonobo's most typical sexual pattern, undocumented in any other primate, is genito-genital rubbing (or GG rubbing) between adult females. One female facing another clings with arms and legs to a partner that, standing on both hands and feet, lifts her off the ground.

harvard.edu

de Waal, Frans B. M. (March 1995). "Bonobo Sex and Society" (PDF). Scientific American. 272 (3): 58–88. Bibcode:1995SciAm.272c..82W. doi:10.1038/scientificamerican0395-82. PMID 7871411. Archived from the original (PDF) on 27 January 2012. Retrieved 21 December 2011. They also practice so-called penis-fencing, in which two males hang face to face from a branch while rubbing their erect penises together. ...Perhaps the bonobo's most typical sexual pattern, undocumented in any other primate, is genito-genital rubbing (or GG rubbing) between adult females. One female facing another clings with arms and legs to a partner that, standing on both hands and feet, lifts her off the ground.

Kort, Joe (April 16, 2013). "Guys On The 'Side': Looking Beyond Gay Tops And Bottoms". HuffPost. Retrieved April 7, 2022.

Kelly, Jeffrey A (October 1995). "Advances in HIV/AIDS education and prevention". Family Relations. 44 (4). National Council on Family Relations: 345–352. doi:10.2307/584989. ISSN 0197-6664. JSTOR 584989.

Bell, Robin (13 February 1999). "Homosexual men and women". BMJ. 318 (7181): 452–5. doi:10.1136/bmj.318.7181.452. PMC 1114912. PMID 9974466.
Rosenberger, Joshua G. (2011). "Sexual Behaviors and Situational Characteristics of Most Recent Male-Partnered Sexual Event among Gay and Bisexually Identified Men in the United States". The Journal of Sexual Medicine. 8 (11): 3040–3050. doi:10.1111/j.1743-6109.2011.02438.x. PMID 21883941.
de Waal, Frans B. M. (March 1995). "Bonobo Sex and Society" (PDF). Scientific American. 272 (3): 58–88. Bibcode:1995SciAm.272c..82W. doi:10.1038/scientificamerican0395-82. PMID 7871411. Archived from the original (PDF) on 27 January 2012. Retrieved 21 December 2011. They also practice so-called penis-fencing, in which two males hang face to face from a branch while rubbing their erect penises together. ...Perhaps the bonobo's most typical sexual pattern, undocumented in any other primate, is genito-genital rubbing (or GG rubbing) between adult females. One female facing another clings with arms and legs to a partner that, standing on both hands and feet, lifts her off the ground.

[1] Archived 2013-10-20 at the Wayback Machine Role versatility among men who have sex with men in urban Peru. In: The Journal of Sex Research, August 2007

de Waal, Frans B. M. (March 1995). "Bonobo Sex and Society" (PDF). Scientific American. 272 (3): 58–88. Bibcode:1995SciAm.272c..82W. doi:10.1038/scientificamerican0395-82. PMID 7871411. Archived from the original (PDF) on 27 January 2012. Retrieved 21 December 2011. They also practice so-called penis-fencing, in which two males hang face to face from a branch while rubbing their erect penises together. ...Perhaps the bonobo's most typical sexual pattern, undocumented in any other primate, is genito-genital rubbing (or GG rubbing) between adult females. One female facing another clings with arms and legs to a partner that, standing on both hands and feet, lifts her off the ground.

Nichols, Jack. "Interview: Cockrub Warrior Bill Weintraub". Gay Today. Archived from the original on September 21, 2018. Retrieved April 26, 2010.
[1] Archived 2013-10-20 at the Wayback Machine Role versatility among men who have sex with men in urban Peru. In: The Journal of Sex Research, August 2007
de Waal, Frans B. M. (March 1995). "Bonobo Sex and Society" (PDF). Scientific American. 272 (3): 58–88. Bibcode:1995SciAm.272c..82W. doi:10.1038/scientificamerican0395-82. PMID 7871411. Archived from the original (PDF) on 27 January 2012. Retrieved 21 December 2011. They also practice so-called penis-fencing, in which two males hang face to face from a branch while rubbing their erect penises together. ...Perhaps the bonobo's most typical sexual pattern, undocumented in any other primate, is genito-genital rubbing (or GG rubbing) between adult females. One female facing another clings with arms and legs to a partner that, standing on both hands and feet, lifts her off the ground.

Kelly, Jeffrey A (October 1995). "Advances in HIV/AIDS education and prevention". Family Relations. 44 (4). National Council on Family Relations: 345–352. doi:10.2307/584989. ISSN 0197-6664. JSTOR 584989.