I think "bros before hoes" makes sense, to an extent, because girlfriends always come and go; friendships tend to last longer, so why let them get destroyed by "romantic" interests. There may even be more love in the average friendship, because when it comes to dating I think each person is looking to get something from the other person and it's more like an exchange. But I say it makes sense "to an extent" because if you really fall in love with a great girl then that may be more important than friends.. but then, if she's that great, why would you have to give up your friends =P

I've never heard of "fries before guys", but it sounds like a mantra of eating whatever you feel like and not caring if you get fat, which is disgusting.