Spirt
1. n. The resedue (urine) Left over after a Urination.
2. v. The act of Pissing Ones Pants.
3. v. After a piss, watching to see if your Boxers still get Urine on them.

Origin = Piss + Squirt = Spirt
1. After a Piss, john Doesnt like it when he has spirt in his Boxers
2. Drew was laughing so hard yesterday he Spirted his pants several Times.
3. Casey shakes it for extra points, to make sure He doesnt spirt his boxers.