When two or more ginger haired people do "it". Not dependent on relations.
Person 1: I heard christopher and phillipa did it last night.

Person 2: ewww dirty gingcest.
by setfiretotherain February 24, 2011
Get the gingcest mug.
When two gingers have sexual relations or want eachother’s pot of gold.
I really want to fuck Sir Lucky Charms, but i would be committing gingcest.
by Zach cock May 9, 2021
Get the Gingcest mug.