In Northern Ireland the term wick is used to mean no good. Usually is replaced by other harsher words as a child gets older. Today one might say if something is wick, 'it sucks'.
The small piece of skin next to your finger nail that gets lifted up, often resembling the wick of a candle. Often very irritating and hard to stop playing with.
adj. 1) Something that kicks complete ass, better than having sex with your friend's busty skinny blonde sister that wears hot thong underwear that you can sneak a peek at when she bends over.