Define Fill The Gas Tank Meaning

Filling The Gas Tank
Filling the gas tank is when you stick your dick into someone's ass (male or female) and proceed to piss.

Cade: I got laid last night.
Owen: Yeah right, by who?
Cade: Bronwynn let me try Filling the gas tank
Owen: 🅱oi
By Tish
Fill The Gas Tank

Person A: I went home with that girl last night.

Person B: Did you "fill the gas tank"?
By Nady