My My girl doesn't. Women think it's cool to act like how guys "act" (how the TV tells them guys act) now, which is rather annoying to me, but also gives them the freedom to do things like get caught checking out a cock - so I suppose it's good in a way. I don't think I've ever even had a bulge - I never wear tight pants or briefs (and a small cock doesn't hurt )
i think it is meant as a joke to say if the buldge is in back it is likely a load of crap in his pants, lol.
All this puts me in mind of an incident live on UK TV a couple of years ago (a Christmas presentation IIRC) with UK Rad & TV personality, Terry Wogan. http://www.tvscoop.tv/2007/10/terry_wogan_ups.html
It's disheartening to see that Brits make such a fuss about this. I didn't think they were as prudish as Americans. Ppl here make a big ado about my bikini. Yeah, there are bulges there - I'm a guy, I got stuff between my legs. Grow up. Terry Wogan seems to have a bulge about as big as mine. Encouraging that it may not shrink so much in the next five years. When they mentioned he is Irish, I somehow thought about the Scots. At least when you wear a kilt, you don't have to worry about bulges in your trousers.