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]