By telling me what board game is the most irritating, rage inducing one you can think of?
My SIL and her boyfriend are the most competitive people I know, and we always play game night with them and it ends in rage (this is LIGHT HEARTED, yes this is all there is to it, no massive back story or counselling needed
)
For a gift we want to get them a really bloody frustrating game because we're going to swot up on it first to kick their arses. Yes it's petty and no we don't care 
So pleeeeaaaase tell me.. what games make your family go crazy?