Ejaculating or inserting seminal fluid into the partner's anal cavity
"Yo bro I hooked up with this chick last night. She's like Ferrari sexy with the ass of a lambo so I had to put a little sugar in the gas tank."
by JRSlay July 27, 2017
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A cute/ sarcastic name for a guy's beer belly
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.
by Sexydimma November 11, 2017
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a cute/sarcastic name for a guy's beer belly
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.
by Sexydimma February 25, 2015
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Taking steriods to give you more motivation to work out.
Chad has some gas in the tank, I think he has been on roids.
by Truthteller85 December 10, 2011
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When you see how far you can go on E without running out of gas.
I was gambling the gas tank so long my 16 gallon tank took 16.7
by Dr.N3 December 8, 2010
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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"
by Mike the LCB March 20, 2012
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A cute/ sarcastic name for a guy's beer belly
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.
by Sexydimma September 17, 2016
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