Grinching

Inserting semen back in the urethra by way of blowing semen through a straw directly into the urethra.

Hey babe, can you keep grinching me?

Grinching

Grinching (Verb) When a companion inserts semen back into the urethra by way of blowing said semen through a straw.

Hey babe can you come grinch me?

Wow, I could sure use a good grinching session.