Onion Balls 

When your balls are so sweaty and smelly they could make someone's eyes tear.

I went for a jog then I laid in the sun for an hour. My girl insisted on giving me head, her eyes started tearing up and then I told her I had a bad case of Onion balls.

Onion Balls by miggelzworth October 27, 2010

onion balls 

A term used used to describe how your balls might smell, typicaly after walking around in the heat all day.

Damn bro its fucking hot out, I probably got a bad case of onion balls right now.

onion balls by MKasper August 9, 2006