underline 

To cherish someone forever

I’m going to underline you.

underline by Firewater2805 November 19, 2020

Underline Slopper

Slang for sucking on balls

Carl: "Yo Stewie, how was your date with Andessa?"
Stewie: "You wont believe me, she gave me the best Underline Slopper ever"

Underline Slopper by Seacole June 22, 2023

Undermindtm 

A clothing and accessory company started by Matthew Vargas in Morgan Hill, CA. Established in 2004, the company makes a wide range of products marketed mainly to the LGBT community.

Guy 1: That's a cute shirt man.

Guy 2: Thanks, I got it from Undermindtm, bro.

Guy 1: Let's make out.

Undermindtm by NickFirato October 19, 2011

underminiac 

Noun. A word blend of undermine and maniac. Depicts someone who cannot help them self from making undermining comments. As with kleptomania the underminiac is largely unconscious of this behavior even though it might seem like they take sadistic gratification from it. Their victims are often left realizing how badly they were trashed for days and weeks afterward as many of the undermining comments are not initially obvious.

Lunch with that underminiac will leave your ego in a coma for weeks afterwards.

underminiac by Swampybaby January 6, 2017

Underbite Chia 

Someone who has a major underbite with crooked teeth. And chia pet hair.

Wow! what an underbite chia you are!

Underbite Chia by shrogor cheet January 8, 2020

underside 

same thing as taint, gooch, etc.

it's the patch of skin between the balls and asshole. girls have one as well but it's not as funny.

it was so hot out my underwear was soaking up all the sweat from my underside.

underside by Feve July 25, 2011

undermining 

The act of under estimating something about someone or the act of making a person feel inferior to ur to your list of skills

You are undermining my knowledge bro

undermining by La SAPE August 18, 2019