Top Definition
A "bro" term for when you tense your muscles up tightly so that you can stand better ground and/or brace yourself before getting hit by something.

Similar to "tensing up".

Muscles usually flexed include:
- pecs
- shoulders
- biceps
"bro I almost got bodied by Chaz but i got the flex shield up in time."
"...sounds like a close call."
by Given Dodis November 29, 2007

The Urban Dictionary Mug

Lotsa space for your liquids.

Buy the mug

The Urban Dictionary Mug

Lotsa space for your liquids.

Buy the mug

The Urban Dictionary Mug

Your favorite word on a white mug.

Create a mug

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug

The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

Buy the t-shirt

The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

Buy the t-shirt