under armor 

Brand of exspensive clothing offering undergarments and cold/hot/wet weather gear. Great quality and performance.

Just bought some under armor man, best there is.

under armor by ben newton December 10, 2008

Under Armor 

Sexist brand that makes fake shirts

Lemme just buy this sexist brand called Under Armor

Under Armor by PhillipN October 20, 2019

Under armor 

The clothing that every kid in your class who wants to join the NBA wears, typically found with Nike shoes.

Normie: Yo sup pooper I just got my hands on this lit clout under armor shirttt!
Kid: I don’t care.

Under armor by Boing Doinkus December 20, 2018

Under Armor White Tee

A white tee shirt that is so skin tight you can see right through it and read the shirt underneath. The only way this shirt can be put on is either to have it sewn on by a professional seemstress or have it spraypainted on.

Grease went to buy bullets at academy wearing his favorite Under Armor White Tee and the clerk was heard saying "hey you must really like top gun huh?"

Under Armor White Tee by Ole Spends Alot January 13, 2008

tucked like underarmor 

To conceal carry a firearm at all times.

Friend: bro, I’m nervous what happens if somebody tries to rob us?

Friend: don’t worry, I got that heater tucked like underarmor.

tucked like underarmor by AlwaysTucked July 31, 2021

Tucked Like Underarmor 

To conceal a firearm in ones waistband so snug that it resembles the tight fit of Underarmor.

Dylan: Hey man I'm kinda nervous we might get robbed...
Doug: Don't sweat it bro, I got that thang tucked like Underarmor.

Tucked Like Underarmor by AlwaysTucked August 25, 2021