The act of physically holding your ass-cheeks with your hands and running for dear life,
dignity and
decency towards the nearest restroom. And why? Because you've really
gotta go.
Jeremy: Man, you know, I had a hilarious time yesterday.
Frank: Why's that?
Jeremy: Because me and my girlfriend were at the mall and she had to do
a Billy Run. Dammit that was funny!
Frank:
HAH!