An Ohio Turkey is when you feed your girlfriend stuffing as you would insert into a Thanksgiving turkey, and while the stuffing is in her mouth she proceeds to give you a blow job. The gravy for the stuffing is your semen.
Guy 1: "Hey man how'd that date go last night?"
Guy 2: "It went great thanks! We had the best night, she gave me an Ohio Turkey."
Guy 1: "I'll have to try that."