1 definition by Face-Munch3r

Top Definition
A Random Boner, or an unexpected erection. Called a rubidium due to the element's symbol being Rb
I was sitting in maths when all of a sudden, i got a Rubidium!
by Face-Munch3r September 01, 2011

Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from daily@urbandictionary.com. We'll never spam you.

×