Just in case you wondered what men do in locker rooms, this study says that men check out each other's penises to compare sizes.

For this small peer-reviewed study, Christopher Morriss-Roberts, Ph.D. conducted one-hour interviews with eight male athletes from around London - four heterosexual and four homosexual men - to see if penis size affects male behavior in a locker room.

It turns out they all totally checked out each other's packages when they hit the locker room.

Morriss-Roberts explains that this curiosity wasn't out of sexual attraction, but really a way to size up other players - in terms of actual size and masculinity/athletic ability. Most of the guys said they actually talked about their penises in the locker room, noting sizes and even creating nicknames for each other's penises.

Men with bigger packages were idolized by the others and seen as more masculine, and apparently, penises were a conversation starter and a topic they could bond over.

Seriously?!

The study doesn't mean that all men do this, but it's still an interesting look at how guys interact with each other. And who knew there was so much penis talk going on in the locker room?!