cardslot Share definition Flag an extreme variation of the "coinslot", where a girl's pants ride so low that the amount of ass crack showing more closely resembles something into which one would jam a debit card. Check out that skank's cardslot! Hey! Turn around, bitch! I need to make a withdrawal! cardslot by beansoup July 31, 2011 0 0 Get merch Get the cardslot mug. Buy Now — $32.95 See more merch