Definitions by Hell Hound

Niagara Balls 

When temperature and humidity are so high that, even the slightest form of movement, causes you to sweat profusely particularly, in the case, from a man's nether region.

It was so hot at work today and I was sweating so bad, it was like Niagara Balls running down my leg.

Niagara Balls by Hell Hound August 31, 2013