"Four Kids" joke

There were once four kids, Poop, Shut Up, Manners, and Trouble.
Poop was riding his bike and fell. Manners went to help him up. Trouble got lost. Shut Up goes to the Police Station to report it.
Officer: What's your name?
Shut Up: Shut Up.
Officer: What's your name?
Shut Up: Shut Up.
Officer: For the last time, WHAT'S YOUR NAME?!
Shut Up: Shut Up!
Officer: Are you looking for Trouble?
Shut Up: Yeah, we lost him about 2 miles back.
Officer: Where's your Manners?
Shut Up: Back there pickin' up Poop.