When you pull your dick out of your boyfriends asshole and bust a nut on his back, also a popular place to perform this act of "Cummins" is in the back of a rednecks ragged out Dodge Cummins turbo diesel
My boyfriend gave me a nice cummins last night, I can't wait to try it with my cousin tonight.
by AmericanDiesel March 19, 2017
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Where's that?
"Oh i live in cummins"
"Cummins"? "Where's that"?
by Ya boi Squishy February 04, 2020
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To do a Cummins:

- To suggest very restrictive measures that others must follow, and then choose not to follow these rules themself. (See hypocrite ).

- Must then spend hours making excuses and defending said action, without apology or remorse, despite everyone else explaining how wrong his actions were.
John: "So what about these new restrictions coming this weekend? No chance we'll make that BBQ now"
Dominic: "No worry, everyone's doing a Cummins and will go anyway!"
by DominicCummins May 25, 2020
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When you suggest a wager on something you have researched for weeks and no full well that your mates don’t stand a chance on.
Him: Hey! Wanna put a bet on the premier league dream team this season?
You: Are you just gonna do your usual Cummins on us and make us all look like incompetent tits!?
Him: No, I promise we all have a fair shot
You: Yeah fucking right!
by soreloserthesecond November 15, 2019
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An engine company that builds Diesel engines for semi trucks, ships, generators and Dodge Ram heavy duty pickups. They got famous to all the flat billed hat retards and the dopeity dope cocksuckers when they started shoving them into dodge shipping crate shitboxes. (up until 2002 where they changed the shit automatic to something that could actually handle the engine) You see dodge trucks with cummins engines either driving like a normal truck, pulling something like a heavy duty truck or with some 2 inch pecker retard that hasn't seen his cock since the Nixon administration driving it with a 6 inch lift kit and retarded 5 thousand dollar "mud tires" that will never leave the pavement. Dodge trucks rust away faster than the check engine light turns on in a 6 blow. The transmissions (automatic before 2002) break faster than your girlfriend leaves you when you tell her you bought a 6 liter power suck turbo faggot. Cummins engines don't need to be "bulletproofed" because the company that builds them has some fuckin brains in the tank and didn't shit on their hands and wipe it all over the blueprints.
"shit dude that dodge is so rusty I can see right through the side of the bed"
"must be a cummins only reason to buy a dodge"
by Numb ass March 24, 2019
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wifey: u need anything babe?
veteran: face down ass up cummin in hot
by BumStatusYo December 15, 2018
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