shmerkberk 

SUPER ugly.

FRIEND 1: OHhh, you see that girl right there? Her bum is niceee!
FRIEND 2: Ok but she's shmerkberk

shmerkberk by Yung.boii1 January 12, 2017

Shmerbert 

the act of pursing one's lips on someone else's navel and blowing, thus making a "bvvvrrrrtt" noise.

He woke her up with a shmerbert, because it was more innocent than motorboating.

Shmerbert by Kit Scrimshaw February 14, 2021