Duck Check 

The quick ducking action taken in a puclic restroom to see if any closed stalls are occupied. Often performed to assure safeness in performing a private conversation, whistling, or loud, obnoxious singing. If a duck check proves the company of another restroom-user, silence will ensue.

Bob: Yeah, so then she told me...
Rob: Hold on let me do a duck check.
Bob: Well?
Rob: You're good. There's no one here.

Duck Check by jeenee417 August 11, 2010

checkered duck

When you want to sleep. Go to bed early.

Luis and Mallory will be checkered ducks tonight.

checkered duck by Duck Me Down February 4, 2017

Dickcheck 

some one who gets hit by cars and continues to think he is cool because of it...also enjoys calling jonah fat

"wow, that girl is such a dickcheck!"

Dickcheck by bobcheck April 10, 2010