Top definition
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
Get the mug
Get a carseat mug for your guy Rihanna.
Apr 21 Word of the Day
I've been jabbed
by Francesco II March 20, 2021
Get the mug
Get a jabbed mug for your brother Paul.
Putting a girls driver seat all the way down and back, while sitting naked under her, having sex while she drives
She crashed her car while we were on our way to a trampoline park because we were doing the car seat.
by CJK5 April 09, 2018
Get the merch
Get the Car seat neck gaiter and mug.