Say no, but wish them well.
Ignore the request, it's not for you.
Tell them that they're crazy.
Hey, why not try it, as long as it's safe.
End the conversation quickly.
Tell them they're being a pain.
Hang up on them.
Ask them what's upsetting them.
Call in sick even though you're not sick.
Tell them there's no way you're going.
Go, and complain about it.
Go,and have fun - it's only one night.
Call them and let them know about the rumor.
Ask another friend what's up.
Ignore the rumor.
Probably believe it and share it.
Get snarky about the mutual friend.
Ignore the mutual friend.
Try to figure out why you don't like them.
Be nice even if you don't like them.