underweasel 

the ferret-like inside of a person (usually male) that tends to grow larger as his sleeze factor increases until it is visible through the skin.

He lied to her once again, not knowing that she had finally seen his underweasel.

underweasel by 22valentines December 13, 2008

Un-underwearer

Someone who is against the idea of wearing underwear

Jonathan is an Un-underwearer I find that disgusting

Un-underwearer by Hotworder August 21, 2020

Underwarelooms 

That pair of underware with the holes and stains that you love so much it will stay in your laundry basket until you are dead and your childrens,children will inherit it as part of the family underwarelooms.

That jock strap belonged to your grandfather and these longjohns and pantalooms were also part of your grandmothers underwarelooms.

Underwarelooms by ZwordZ July 6, 2008

underweiser 

beautiful, smart person person.

"wow, she's such an underweiser!!"

underweiser by Hellomynamisjoey May 28, 2009