To ejaculate massive ammounts of semen into a vagina or anus. This practice can only be accomplished in the absence of condoms or any other contraceptive that prevents the exchange of fluids. A vagina that has been habitually been topped off runs the risk of becomming garbage pussy.
Bend over whore, Im gonna top off your gas tank with pure, unadulterated eastern Kentucky baby slime.
I love nothing more than topping off gas tanks.
Condoms? I would never take a shower in a raincoat, why would I wear condoms? I am going to top off your gas tank.
I am going to top off your gas tank, and then I will be in you forever.
I love nothing more than topping off gas tanks.
Condoms? I would never take a shower in a raincoat, why would I wear condoms? I am going to top off your gas tank.
I am going to top off your gas tank, and then I will be in you forever.
by Taquesia Blackdigk September 27, 2006
The art of having anal sex with a female, and while she isn’t looking you pee in her butthole to save you a trip to the bathroom.
Chad: Dude my girlfriend broke up with me because she was shitting piss for days after I gave her the good ol’ Gas tank fill-up
by Longballe_d October 9, 2018
Woman: I like your beer belly, let's go get a beer some time?
Man: lol, beer makes you gain weight; it's not a beer belly, it's my gas tank for a sex machine
Woman: lol, I didn't know such machines, or their gas tanks, existed.
Man: lol, beer makes you gain weight; it's not a beer belly, it's my gas tank for a sex machine
Woman: lol, I didn't know such machines, or their gas tanks, existed.
by Sexydimma November 11, 2017
woman: I like your beer belly, let's get a beer some time?
man: lol, beer makes you gain weight; besides, it's not a beer belly it's my gas tank for a sex machine
woman: lol, I didn't know such machines, or their gas tanks existed.
man: lol, beer makes you gain weight; besides, it's not a beer belly it's my gas tank for a sex machine
woman: lol, I didn't know such machines, or their gas tanks existed.
by Sexydimma February 25, 2015
by Dr.N3 December 8, 2010
The metaphorical container that holds all the liberties in a friendship. Occasionally needs refilling to keep the friendship in a proper give-take equilibrium. Can be refilled by one friend giving the other friend food, alcohol, sexual favors, money, rides, or even filling their actual gas tank.
Molly: "Mike, can you drive me around to do some errands today?"
Mike: "It's been a while since you filled up the friendship gas tank..."
Molly: "What if I buy you Taco Bell?"
Mike: "Deal"
Mike: "It's been a while since you filled up the friendship gas tank..."
Molly: "What if I buy you Taco Bell?"
Mike: "Deal"
by Mike the LCB March 20, 2012
Woman: I like your beer belly, let's go get a beer some time?
Man: lol, beer makes you gain weight; it's not a beer belly, it's my gas tank for a sex machine
Woman: lol, I didn't know such machines, or their gas tanks, existed.
Man: lol, beer makes you gain weight; it's not a beer belly, it's my gas tank for a sex machine
Woman: lol, I didn't know such machines, or their gas tanks, existed.
by Sexydimma September 17, 2016