thirteenth base

having sex with your partner's corpse after they reach twelfth base
I fucked this chick to death, and then I went to thirteenth base with her.
by 69Dildozer69 August 11, 2009
Flag
Get the thirteenth base mug.

thirteenth base

taking a persons urine in your mouth, then shooting it up their anal or vaginal hole.
Thirteenth base is hot
by sniff&sneeze June 05, 2010
Flag
Get the thirteenth base mug.
More random definitions