The way they raise their arm, and flex their biceps behind their head, just sends me crazy. I know some of ya'll don't like armpits, but this is my instant turn on.
To those who share the same 'fetish' that I have - even though I don't think it is one anyways - what makes them so hot and such a turn on?
Note: Obviously there are ones that aren't pleasing to look at, but that applies to anything, so stop with posting bad pictures of them to prove something.
I guess it could be a turn-on, but most guys don't really have nice biceps or nice pits, so it could easily be a turn-off too. You don't really see this much in daily life unless the guy is either walking around shirtless or has a tank top on.