Top definition
A person ages 12-45 that like WWE Wrestling and will think that it is real no matter what you say. The adjective "Niss" May also be used by a

Nissy Boy that he/She may think is cool.
Oh Niss!

That Action figure is soo Nissy!

That man sure does like WWE Wrestling...He must be a Nissy Boy.
by NissyBoy May 12, 2013
Mug icon

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