seat belt effect 

Where the strap of the seat belt proceeds to split a woman's breasts, thus making them appear bigger and more noticable

Did you see that girl through the drive thru? She was definately a victim of the seat belt effect!

seat belt effect by E. Normous Johnson September 21, 2008

Seat-Belt Titty's

When a female has her seat-belt on and it crosses between her boobs making them look bigger in size which would later create a boner for the guy sitting in the car next to her looking at them.

"Hey Chubb's look at blonde in the car next to us. She has some awesome seat-belt titty's. I'd sure like to stick my cock between them"

Seat-Belt Titty's by Tasty Cake's Brother July 17, 2009

Seat belt supreme 

During anal sex in the back seat of a car, one quickly replaces the penetrating penis with a seat belt.

1. "Dude, last night on the way home in the car, you didnt even know it, but I gave your girl a mean Seat belt supreme in the back seat."

Seat belt supreme by jorge12345 June 18, 2011

Seat belt law 

Dane County and the state of Wisconsin's way of fattening up their county budget by penalizing peoples personal habits that do no harm to others.

Dane County deputies are cracking down on Wisconsin seat belt law.

Seat belt law by lordvader1982 December 14, 2010

seat belt-a-roonie

What Ned Flanders on The Simpsons calls a seat belt.

{Ned}: Let's see here...key in the ignition, turn it to fire up the motor, seat belt-a-roonie, shift into drive, hands at 10 and 2, floor it!

seat belt-a-roonie by Telephony January 23, 2016

Skeet Belt 

When a man intends to spray his ejaculate (i.e. skeet) on his woman's belly button, but ends up sprayin' skeet across her entire waist line instead. Skeet belts must go fully across, from left hipbone to right hipbone.
NOTE: Skeet belts are only a temporary accessory. That is, they do NOT last for more than 6 hours and will NOT hold up any other articles of clothing (like your pants). They do, however, compliment some articles of clothing very well (e.g. pearl necklaces).

My girl asked me to pull out, so I gave her a skeet belt to match her pearl necklace. She loved the accessories so much that she asked me for a pearl string bikini for Christmas.

Skeet Belt by Aww Skeet Skeet Got Damn August 9, 2008

Seat belt selfie 

Term for person (usually women) who only take selfies while in a car or driving and nowhere else, with the seat belt neatly across the chest. Person may have self image issues and feel hidden somewhat by being in a vehicle as they post no other type of self pictures.

What do you think of the new girl, Debbie? She looks kinda cute, but it's hard to tell with all the seat belt selfies on her Facebook page.

Seat belt selfie by Lazy_Tiger July 18, 2016