Immediately try to return it to it's owner.
Take it with you and later try to return it.
Return it, but not before taking $10 as a tip.
Leave it on the ground.
You call before and tell them you're not coming, and you also send your niece flowers.
You make an appearance, but leave as soon as your niece's dance is over.
You suck it up and go anyway, you said you would be there.
You stay home, you'll call tomorrow to explain you didn't feel well.
Hunter S. Thompson
Pretty in Pink
The Breakfast Club
The cherry on top.
Here's an interesting quiz for you.