Not playing fair.

He hates to lose ... and tries to switch his cards recklessly - whether or not I'm looking - and thinks the only way to win is to snitch an arsenal of Draw 4's and +2's. I still win. Frustrated, he ropes in his friend, his Tigger so that 'they' can exchange cards. He plays both his and Tigger's sets of cards against me but won't let Tigger win. Even when Tigger is down to 2 cards, he gets Tigger to not say "Uno" so that he can catch him and give him a 2-card penalty. Hilarious!