Slush Rush 

When someone sticks out their tongue and their male partner ejaculates all over it, then it rushes down their tongue like slush on a mountain.

I gave that girl a good slush rush last night.

Slush Rush by The Pickle Man September 2, 2019

Slush Rush 

When a male pours a blue Slush Puppy into the vagina of a woman - usually creating a burning sensation. This is a tactic often used by aspiring teenagers trying something new.

Vickey: How was it last night Annie?

Annie: It was horrible! Donald slush rushed me round the back.

Slush Rush by Bazza G September 28, 2020