To push someone using the force. As your hand approaches them, they react as if being pushed, without ever being touched. The secret? Lick your palm first, them act like you're going to push them. Works every time. You can force push a force push; ie, if someone goes to force push you, lick your palm and hold it out towards theirs. This turns into a draw.
1: *walks down hallway*
2: "bet I can push you without touching you"
1: "try it"
2: *force push*
1: *stays still*
2: *hand about 2cm from 1 and still moving*
1: *moves away as if pushed*