Adjective describing ones clothing. Means clothing that is
comfortable. Clothes that are slump can be anything
comfortable but are usually loose and baggy, sometimes referred to as stoner clothes. Only girls use the term slump because they post it on Facebook to show people they don't always dress like a slut. Normal people don't need to tell others they're dressed "slump" because it's basically telling people "hey I'm dressed casually today, isn't that great!?" no it's not. Dressing slump is
comfortable and nothing is wrong with it, but showing off being dressed slump is stupid, generally people should avoid using this term unless you want to be looked down upon.
Matt-"yo John, you dressed pretty slump"
John-"dude I always dress like this, it's
comfortable. Don't use that word, it's gay."
Matt-"hey Ariana, you're not dressed like a slut today!"
Ariana-"I know I'm soo slump, I like being
comfortable over looking slutty, unlike those other bitches."
Matt-"
shut the fuck bitch."