This is a great social card game that will f**k with your head by using a hysterically tricky combination of colours and swear words. Players take turns to flip over a card and shout out what they see. Depending on your card, you might say its background colour, its text colour or a swear word. Keep playing until someone f**ks up and is forced to pick up all the cards. The winner is the first player to get rid of their cards. It sounds simple, but the cards use a psychological phenomenon – the Stroop effect – known to mess with your head and delay your brain’s response. Players can’t help but f**k up, sending the group into fits of laughter. Once you’ve mastered the basics, you can take the game to a whole new level with more rules, more strategy and you can even create your own rules.