Question: what does it mean when someone calls you wack?
Answer: Initially it was a noun used to refer to a crazy or eccentric person – He's a real wack – with wacko and whacko emerging as slangy offshoots. This was followed by adjectival wack meaning bad, unfashionable, stupid or of low quality, as in the anti-drugs slogan Crack is wack. ... Even old slang can be hard to keep up with.