Excitement makes it flinch. When a man is getting an orgasm his penis flinches during the orgasm and seconds after it.
It could also be the guy who's making it flinch.0 0 0 0Sometimes he does it on purpose.
Guys can make it flinch? Cool. How though? Is it like a kegal exercise for men?
I don't know why we do it, but I also sometimes flinch it on purpose, it's funny to watch, and if it's in front on the girl, she'll find it funny too xD
His penis is reacting to being excited by flexing. It's the human male equivalent of a dog waging its tail.
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2 6I sometimes have fun flexing my muscle when I am bored. I can make it twist in circles. I have tried putting small weights on it and flexing and that can be an equally fun way to cure boredom. I don't think it has made it any stronger though...
1 0 0 0that is so cool :O
0 0 0 0I don't know the biological reason why it happens , but it happens when its recently been stimulated or we are insanely horny.
0 0 0 0Thanks.
To answer your comment on someone elses opinion. Yes its a good thing! Its a sign of intense pleasure similar to your vaginal contractions.
Because there's blood pumping through it at whatever that guy's heart rate is at.
It's actually kind of fun to watch.2 0 0 0It is. Is it a good or bad thing?
If it's not twitching slightly, then the guy is most likely dead. So it would be a bad thing.
I think it's an involuntary reflex.
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