Why when humans have sex does the guy hump the girl?



  1. 0 Votes

    The humping motion moves the penis in and out of the vagina, providing stimulation.  This stimulation is what eventually leads to orgasm and ejaculation. 

  2. 0 Votes

    Ok, not to sound gross or anything….. but, because the guy has the penis.  A girl has nothing to hump with. 

    Also for humans, men are usually the “dominant” one when it comes to sex. With some other species it is the other way around.  For example, when a preying Mantis mates with a female she hauls off and bites his entire head off…. (I’m glad I’m human) 


  3. 0 Votes

    It is not always the man who provides the thrusting.  There are many positions where the female will provide the leverage for the in and out motion.  

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