Tuck Under 

The male act of tucking a penis behind his legs just below his ass. Often used by transvestite males to hide penis.

Watch out, that dude's no chick. He's just got a nasty tuck under and some nice fake tits.

Tuck Under by The Doctor February 14, 2005

tuck under 

The uncomfortable condition of having your balls and sometimes penis tucked under your inos. Often caused by poorly designed seats.

The seats at the MCC computer lab always give me a bad case of tuck under.

tuck under by Forrest Klump March 12, 2009

Timmy Tuck Under 

A recommended way to deal with a NARB that won't go away. Tuck your raging hard on up Under your belt and tighten down. If you don't have a belt, tighten your draw string. DO NOT USE this method if you aren't wearing a shirt.

In the middle of my brother's wedding, I had to perform a covert Timmy Tuck Under as the bride was walking down the isle.

Timmy Tuck Under by mDAWSONj August 16, 2007

Tuscaloosa Tuck-Under 

When one ties a rope to the left leg, ties it to the highest limb of a tree, hangs upside down from a tree, and inserts their penis into their anus

They found old Georgie hanging from his oak tree doing the old Tuscaloosa Tuck-Under. The neighbors could not believe he was so well endowed!

Tuscaloosa Tuck-Under by Gary Hamhorn March 20, 2010