Undertits 

Much like Underboob...

Bottom tit cleavage... (.)(.)

Also... under tatas... and the thousands of others....

Look at that hottie showing her undertits...

Undertits by D0c October 17, 2009

undertits 

When a woman (or man) has gained sufficient weight such that underneath their breasts (or manboobs) are two folds of fat forming a smaller secondary cleavage, it can be said that they have developed "undertits". Double undertits may be sighted in rarer cases, with triple undertits being an extreme rarity, while quadruple undertits is the oft-rumored holy grail.

Prima: Holy manboobs, batman! That guy has a set of quadruple undertits!

Secunda: I didn't know it was walrus season already.

undertits by Richard Butts April 4, 2010

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

underhipster 

Someone who doesn't wear underwear.

Sue is an underhipster because she hates panty lines.

underhipster by Skylar01 November 23, 2014

Underies 

Noun:
1. Testicles
2. Goolies

Women have ovaries. Men have underies.

Underies by icklemickle February 1, 2005

underlit 

Not as drunk, high or entertained as you would like to be.

1) When arriving late to a party I feel underlit.
2) These cheap drugs make me feel underlit.
3) Compared to other clubs this music is underlit.

underlit by RareNintendoGames April 4, 2017

Underpits

Another word for armpits. A combination of underarms and armpits.

A word that makes me laugh.

Would you like to smell my underpits?

Underpits by Matilda o Donahue November 7, 2017