There’s no better time than the holidays—when everyone’s all together—to scam, grift, and alienate your friends and family. So Richard Wiseman has returned with another series of unloseable bets that guarantee you victory thanks to basic science and physics.

Some of them you’ve probably known since you were a kid, like adding pennies to an already full glass of liquid. But there are some new gems in here that should lead to plenty of frustration, on everyone else’s part. [YouTube]