n 1 party-girl, he says, to put it delicately. A girl easier to party on than other girls. Much the same as a “slapper,” but slightly less extreme and a little more unisexual. Tarts spend hours perfecting make-up, hair and clothes before going out and waiting at the side of the dance floor to be pulled. At the end of the evening, there’s a tendency for the tarts to slide towards slapperdom, just to make sure all that lip gloss doesn’t go to waste. The word may or may not be derived from “sweetheart.” 2 small cake with a filling – perhaps jam or fruit. So, when in Alice Through the Looking Glass, the rhyme goes “the knave of hearts, he stole the tarts,” he wasn’t leaping off with his arms full of easy young ladies. 3 sour (universal).