Human Seatbelt 

The act of stopping abruptly in a car and extending your right arm across the passanger's chest just to cop a cheap feel.

Jessie: "Jeff stopped so suddenly"
Claudia: "Yeah, he totally just gave me a human seatbelt"

Human Seatbelt by phrezur_burn March 27, 2009

Emo Seatbelt

Those colourful silicone "cause" bracelets that you wear on your wrist. They interrupt the Emo cutting ritual.

Emo 1: "Dude. I was totally going to cut my wrists today, but my Livestrong bracelet got in the way."

Emo 2: "Dude! It's because you were wearing your Emo Seatbelt!"

Emo Seatbelt by Uncle Dal March 30, 2013

mom seatbelt 

verb- the act of instinctively placing your arm over someone or something in the passenger seat when slamming on the breaks in the car.

BREAKS SQUEAL!
Me: "Woah. I'm happy I mom seatbelted the pizza. That would've been ugly."

mom seatbelt by VannAleXX January 9, 2012

australian seatbelt 

When you reach under from behind to the front, invert your hand with a jerking motion to & fro.

I gave the homeless man an Australian seatbelt in exchange for a cheese sandwich and a half bottle of piss.

australian seatbelt by Dj_twel October 7, 2017

Paper Seatbelt 

A false sense of security. Used to describe anything that appears to be strong and secure, but in reality is very weak and vunerable.

The built-in firewall settings in Windows XP is like a paper seatbelt. Hackers can find ways to access your computer.

Paper Seatbelt by Vito Cavallo November 3, 2004

Stonewall Seatbelt 

Rudimentary device for securing a lose penis. To create this device, a string is tied around preferably the foreskin or head of the penis if foreskin is not present. The other end of the string is attached to an anal toy of some sort. When the anal toy is inserted in the user's anus, the string will pull the dong between the legs and across the gooch, securing the penis in place.

Damn Mike's dick is so big I heard he had to use a Stonewall Seatbelt just so he is able to wear shorts.

Stonewall Seatbelt by bigolepenis April 7, 2018

Mexican Seatbelt 

When three people sit in the back seat of a car, and a fourth lays across all three of their laps. The person laying is the Mexican Seatbelt, and calls "Mexican Seatbelt" upon assuming this position.

"MEXICAN SEATBELT"

"Dude, your elbow is crushing my balls"

Mexican Seatbelt by THCidiot July 6, 2009