do a sit-up

insult delivered to that fat douche bag who just won't shut the fuck up

fat douche bag: dude you can't do that for shit

maddog: go do a sit-up you fat shit

by DUDL3Y February 16, 2010

Super Sit Up

When one sit ups so hard and fast they lawn chair themselves and it's hilarious

"I was hanging with Wyatt yesterday and you know him. Fitness nut. But then it happened."
"..."
"..."
"!?!"
"..."
"!?!?!?!?..."
"..."
".....!?!??! What happened??"
"HUH?? Oh what? I spaced out"
"What happened yesterday?"
"Oh Wyatt super sit upped and popped his back. Hes kinda stuck at home now"
"...I hate you"

by RetributionVII June 29, 2018

Bert Kreischer sit-ups

A highly competitive exercise competition requiring each participant to insert a well lubricated prosthetic penis and or phallic shaped object(s) into the anus prior to performing maximum effort sit-ups. The goal is to perform the maximum amount of repetitions each round prior to the prosthetic penis and or phallic shaped object(s) fully dislodging from the body. A winner will be determined following ten rounds of continuous play with no more than a one minute break in between rounds.

those last few rounds of Bert Kreischer sit-ups was a gut check!

by Mr SlapNTickle March 20, 2023

Weed Sit-ups

That abdominal exercise you do when you’re kicked back on the couch and you need to reach the cannabis on the coffee table.

I started doing weed sit-ups instead of laying my pipe on the couch, so I can eat whatever I want and lose weight.

by Trillith November 27, 2021

Bert Kreischer sit-ups

A highly competitive exercise competition requiring each participant to insert a well lubricated prosthetic penis and or phallic shaped object(s) into the anus prior to performing maximum effort sit-ups. The goal is to perform the maximum amount of repetitions each round prior to the prosthetic penis and or phallic shaped object(s) fully dislodging from the body. A winner will be determined following ten rounds of continuous play with no more than a one minute break in between rounds.

those last few rounds of Bert Kreischer sit-ups was a gut check!

by Mr SlapNTickle March 20, 2023

Sit up

To sit with a fixed, upright posture.

Please sit up during class—stop slouching at your desk like that

by Hakanson February 14, 2021

Inverted sit ups

The calorie burning act of sex

Screw the gym, with this new girlfriend I am doing plenty of inverted sit ups

by Wampadude October 27, 2016