A fork of Rural Dictionary
Doing the Dirty Gertrude uses the act of shoving your toenail shavings into any part of the body. The person with the toenails inside of them shall let them sit for about a week. After the scheduled time has come, the sexual partner will take out the shavings and eat them with a mixture of feces and semen.
"My buddy Eric tried a Dirty Gertrude with me last night, it was great!"