Girly wrote in a comment:
Dear Mister Manly,
I need your help. Can you please tell me why it is that men seem to be so proud of their bodily functions, particularly in the form of flatulence or belching? I have noticed that this behavior begins at a very young age and never seems to diminish. I would certainly never be sitting around with my girlfriends and just “let one rip”… however, if one should accidentally slip, I would politely say excuse me with an embarrassing giggle… and certainly would not be met with high fives by my girlfriends yelling “good one!” It seems that the louder and smellier they are the more proud they become! I would really appreciate your insite…
I’m always glad to help when I can, and in your case it’s easy. The basis of mens’ fondness for displaying bodily functions goes back to our hunter-gatherer days. When a group of men headed out on a hunt, it was quite desirable for them to form a sufficient bond as to know that whenever the giant beast they were trying to spear turned on them, the man who slipped in the mud could count on his fellows to distract the animal long enough for him to get back onto his feet, and to survive other such dangerous stuff as a group. At this point, evolution comes into play, making those who developed this bonding process into homosexual behavior much less likely to reproduce, and those who learned to laugh at farts and belches as a way to become comrades, but not sexually attracted comrades, more likely to get some when they brought home the meat. Remember that the theory of evolution is best expressed as, “He who breeds, succeeds!”
Of course, this ability is not really that important anymore, but evolution is a slow process and we, as a really big group, are attempting to rush things. Thus, the fondness men have for belching and farting jokes is going to be with us for a generation or five, and there’s not much that can be easily done about it.
Hope this clears things up,