I picked the Man Hug Troope.
"When two men hug in western media, it usually indicates that they are close friends, brothers (in blood or in spirit) or trusted comrades-in-arms. This is the Man Hug. Usually accompanied by a mutual clap on the back or shoulder, the Man Hug is a show of deep trust and close friendship between two men that cannot be broken easily."
And who is a better example than Chandler and Joey?
(Wanna post it on tumblr? Don't. Just reblog it, okay? I really don't mean to be a bitch about this, but it happened to me before and it not only ruins my day, but makes me not want to post stuff like this anymore.)