Base 51

any odd sex ritual involving different elements which make it seem extraterrestrial/supernatural.

"Elsie and Matt got to base 51 last night."
"whips and chains?"
"No, neck biting and knee screwing."
"whoa, man.Nasty."

by shadofknight December 12, 2007

51st Base

When two guys each get anally penetrated by 2 horses simlutaneously whilst jacking off their own father's that are licking your sister's anus as she shits all over his face.

Dude 1: I got to 51st base last night!
Dude 2: Dude, you're fucked up
Dude 3: Are you really sad enough to look through all of the definitions of bases until the 51st?

by YourMotherAndSister February 15, 2009

51th Base

Are you kidding me? How many of these definitions am I going to have make? It's 51st base, moron

I finally made it to 51th Base!

What?

by plattt November 14, 2010