Cumach ache 

The stomach ache a person gets after swallowing too much sperm during a blow job

Dude after I gave Johnny a b.j. I had such a bad cumach ache.

Cumach ache by CAYloo December 5, 2007

cummach ache 

When your stomach hurts or aches after you swallow cum.

Me: "I have such a bad cummach ache"
Boyfriend: "Well you did swallow my cum"

cummach ache by eekabooka November 17, 2018