Sorting through the dirty clothes basket when you do not own a single clean shirt or pair of pants. This act is usually executed when one is too lazy to wash and fold clothes. College men and women can become victim to hamper diving. Similar to dumpster diving.
Jimmy: Dude, last night I didn't have a clean wife-beater so I went hamper diving for one.
John: Seriously, wash your fucking clothes.
(n) the act of rummaging through dirty laundry to find something acceptable to wear for the day.
(v) to hamper diver
I haven't done my laundry in two weeks, which means I need to hamper dive for the least smelly clothes.