I used to do this as an icebreaker with students at my last job (and you learn the most interesting things about people ).

Someone writes down three things about themselves, and one of them has to be a lie. The other people have to guess which statement is a lie.

The person who guesses correctly has the next turn.

Want to play? I'll start:

1. I showed guinea pigs when I was young
2. I have chased a squirrel around Harvard
3. My bellybutton pokes out instead of in

Which one is the lie?