The gift you or your children give after receiving a crappy present, particularly at Xmas. OR
Gifting someone a totally inappropriate present, because throughout the year they have continually pissed you off.
I think we need to revenge-gift Sammy for his birthday after he gave the kids those drums, cymbals and horns for Xmas. OR
I think Jim needs some little blue pills as a revenge gift for his 21st after what he did at mine.