What is Grosser?
1.
Someone who always gets grossed out by things that many people don't get grossed out by anymore, or ever.
The opposite of a grosser is a
"He's such a grosser, he can't even stand to watch Doctor 90210"
"Yeah, I got my period today."
Response: "EWWWWWWWWWWW, SHUTUPPPPPPPP"
"Gosh, stop being such a grosser, just chill."
See
2.
More gross than gross.
Your face is grosser than your butt.
See