umbkm 

U must be kidding me🤘

George umbkm he didn't not really jump off that roof.

umbkm by sillygoose321 October 27, 2017

Umbumpumpum 

An individual who is deeply, saddeningly disappointing.

"When he forgot the color of my eyes, I realized he was an umbumpumpum."

Umbumpumpum by Lord Yupa February 23, 2019

umbumdigum 

freak, wierdo

you are a umbumdigum (freak)

umbumdigum by kevin littler May 28, 2003

umbambi 

slang for snake in south india by kids.

Unni saw an umbambi in the yard today.

umbambi by Kuttappan_mesthiri July 18, 2021