What is Grommer?

someone that is worse then a groomer, someone like zoe laverne or tony lopez.

girl 1: hey did you hear about that grommer on tiktok?
boy 2: yeah. what an idiot.

Grommer - meme gif

A particularly nasty smelling dump or fart.

After letting a couple grommers loose in the middle of the bar I went and dropped a yellow grommer that burned.