Definitions by Super Robo Boogie Bot II

12th base 

A sexual act including a saddle and/or table tennis paddle

guy 1: we got so far last night
guy 2: what base
guy 1: 12th base
guy 2: Woah!!! how did u get a saddle into her car

12th base by Super Robo Boogie Bot II October 10, 2008