Top definition
Spontaneous Erection Syndrome, sometimes called SES, is a disease that most men suffer from. It is a disease where a man will spontaneously get an erection, while not aroused.

SES usually occurs in a situation where the sufferer could either become embarrassed, or possibly look homosexual.
Tim: Dude! how'd you get a boner? We're watching Mythbusters for christs' sake!

John: I dont know dude, must be my Spontaneous Erection Syndrome.
by Marcus129 February 24, 2010
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