Top Definition
The back middle cup of a beer pong rack. Can only occur if the middle row has been eliminated and the front cup is still standing (sometimes referred to as a "Letterman"). However, other cups can become "Spider Cups" if you yell it loud enough.
I couldnt win the beer pong tournament because I just couldnt hit that darn Spider Cup.
by Chris from Gtown August 27, 2008
Free Daily Email

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

Emails are sent from We'll never spam you.