spit and run 

When a girl just sucks you off and goes her way without giving even a number or any info,leaving u with messed up emotions.More often than not it would be a swallow and run but that does not rhyme with hit and run and girls dont always swallow hence spit and run.

Guy 1) Those spit and run accidents leave so many emotional wrecks.

Guy 2 ) Straight up now tell me do u wanna love me forever or am I caught in a spit and run.

spit and run by jamdown April 18, 2010

spit and run 

Applying one's own saliva to the penis to facilitate sexual relations with an unknowing and traditionally unconscious sexual partner.

She had the nerve to fall asleep on me! Now I'ma have to pull a spit and run on that ass!

spit and run by Marasmus March 23, 2003