I take them on my boat in the middle of the Ocean, where they can make rash decisions based on fear.
Oh, but if it is a tip thing, don't hide your opinions or be afraid to disagree with their opinions. If they say they think a band is awesome don't try to act like you kinda like a couple of their songs, tell her they fucking suck.
If all else fails, hit them in the head with a club, stuff them in a sack, and take them back to your cave.