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Coitus is derived from the Latin word coitio or coire, meaning "a coming together or joining together" or "to go together", and is known under different ancient Latin names for a variety of sexual activities, but usually denotes penile—vaginal penetration. Lerner and Laurence Steinberg state that researchers also "rarely disclose" how they conceptualize sex "or even whether they resolved potential discrepancies" in conceptualizations of sex. While most consider penile—vaginal intercourse to be sex, whether or not anal or oral intercourse is considered sex is more debatable, with oral sex ranking lowest. Human mating strategies and Pair bond Copulation ranges from a purely reproductive activity to one of emotional bonding. For example, sexual intercourse and sexual activity in general often play a strong role in human bonding. One possible reason for this distinct biological feature may be formation of strong emotional bonds between sexual partners important for social interactions and, in the case of humans, long-term partnership rather than immediate sexual reproduction. The resulting cooperation encourages collective tasks that promote the survival of each member of the group.Old Guy Having Sex With Young Cute Full Video dezayo.us Watch Here - real-amateur-porn hot-naked-girl old-and-young. For other works in comics format, see Sex for Beginners (A15, Selkirk) and Erotica for Beginners (D24, Selkirk). For other sexual humor, see The Folklore of Sex. dezayo.us see videos, free sex videos. 6 min - 49, hits - p. the best ruined cum combined video - See more Porn Kings Tube. com. 7 min - 51, hits...the end of the story look at the video above ↑ ↑ ↑
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