why does joey put on all of chandler's clothes
The One Where No One's Ready After Chandler (Matthew Perry) comes back from the bathroom, he is dismayed to find that Joey (Matt LeBlanc) took his chair while he was up. They argue over the chair until Ross orders Chandler to get dressed. When he does, Joey surrenders the chair but takes its cushions with him. Unbeknownst to him, Chandler has already taken his revenge by hiding all of Joey's underwear, forcing him to go commando in a rented tux. Joey promises to do the "opposite" of Chandler hiding his underwear, and emerges wearing everything Chandler owns (and still sans underwear). Ross finally steps in and bans them, and indeed everyone, from the function.