While making love to a woman from behind, rather than reaching under her arms to fondle her breasts, the partner reaches over her shoulders.

May be performed standing or sitting, or in a motor vehicle.
Jack and Jill usually carseat while making love. She says it is off the hook.
by Carseater March 27, 2010
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When you grab something (preferably a puppy) by its sides so it can't move its torso but can still fling its limbs and head around, essentially restraining its movement.
Marina carseated her puppy Kora the other day when she was trying to bite her. "What are you going to do about it now, huh?"
by madam123 July 19, 2019
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Someone who is so uptight about carseat advocacy that they come onto your post or blog and continue posting the same stuff over and over even though they know that you don't care about anything that they are saying. They think they know all there is to know, and it has to be their way or it's not right and you are wrong!
Someone posts a cute picture of their 10 month old in a carseat on a board on a website. Carseat Nazi's come in and tell her that she should ERF (extended rear face) until 2 and 40lbs because that is SAFER, and if she doesn't agree, then they tell her that she is an idiot.
by nichole31385 October 31, 2009
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When a girl is giving you head in the car while driving and right before you climax you pull her shirt over her head to force her to swallow your load.
Becky didn’t appreciate the carseat canopy that I gave her in the back of her family’s van.
by BigBennyBoy September 26, 2019
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The act of fucking a female on her kids carseat and drinking a capri sun
by Nigrolantern February 3, 2023
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Somone who like young children under 6 and are still in car seats
Carseat thief likes young children in carseats
by jakelonglikesmen April 16, 2011
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