It just strikes me as weird. Like is this male bonding time right here where you just talk about who you really want to bone. Get some irl friends already or remove the pretense and start posting on porn sites or some shit.
There's "she's attractive" and then there's "god I want to bend her over a table."
Seriously get a clue.
it's partially:
1. Male bonding - in order to fit in you have to one up the next person and say how much you want to fuck them.
2. Testosterone - men have a abnormally high sex drive. I'm not saying women don't as well, but it's often T that does this. Think with your dick is a real thing. When men are horny, that's all they can think about, and we're talking about men in their teens and 20's in an online environment talking about ScarJo, so by virtue of that, they'll get turned on and have no idea what to do with it OTHER than jack off. They can't put it off, and they can't ignore it, so it consumed them. That's what testosterone DOES.
3. Patriarchy - men are used to being to express their sexuality without repercussion, especially in an online setting. It's just normal for them.