undersized

mini tool, little penis man

With that mini penis, he is a undersized man

undersized by Obelisco July 18, 2017

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

Undersexed 

An adult who has not had enough sex, commensurate with his/her age.
Undersexed individuals find themselves in a vicious circle. Because they lack the sexual experience, they are not confident about sex and hence they rarely get any.

Many serial killers were undersexed. Harvard students are undersexed. Hence, Harvard students are serial killers

Undersexed by Pepe April 8, 2004

Russian Underside 

the russian underside is when your lady gets on top of you upside down and backwards and masturbates you with a 400 pound salmon while you masturbate her with a snow fox.

"Natascha, I think we need to spice up our love life"
"Boris, if you go to the fish store and get some salmon, we can do the Russian Underside and things will be so much hotter!"

Russian Underside by milkmaid604 June 13, 2007

underspeed 

To drive over the speed limit, but still more slowly than everyone else on the road.

Underspeed. Conjugate like any other verb. Jeff undersped the whole time we were in Israel, going 80 kph when the posted limit was 60 kph. Krishnan and I mocked him severely when even a bus passed us at about 100 kph.

underspeed by Javelin December 14, 2008

undesizeable 

A size that is questionable or unable to guess ones dress size from a far

What size shoe do you think those are?
; im not to sure it looks bigger then a 9 Its undesizeable

While ordering in the drive thru and they ask what size would you like on the combo small medium or large and you are undesizeable ;(un sure of the size)

undesizeable by Smokeaholic14bunnybiz October 5, 2017

Scratching the underside 

To undertake action that is considered risky and taboo

A man returned from a drunken and chemically facilitated night out on the wrong side of the tracks. Another man, upon seeing our hero's return, quipped: "he's been scratching the underside".

Scratching the underside by Bakelite October 2, 2012