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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.
by Taquesia Blackdigk September 26, 2006
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