Indian Cousin 

A term used to describe two men who have received oral sex from the same woman.

If two men both have coitus with the same woman, see "Eskimo Brother."

"Hey man, I heard you got a hummer from that bitch Tracy. Me too! Indian Cousins!"

"She was on her period so I got the BJ. I guess Mark and I are Indian Cousins now."

“When two guys get blowies from the same girl, they’re Indian Cousins"

Indian Cousin by Assault Rifle December 2, 2011

Indiana cousins 

Idk what this really means, but it was the title of a romance novel at the gift shop of an Amish buffet and just assumed it's incestuous

Dude! Abner banged Priscilla!? They are totally Indiana Cousins!

Indiana cousins by Nigul Toughjob August 9, 2022