punching shit 

Anal sex. Like punching a time card, punching a vote, or a hole puncher. Punching shit.

Gay men, and adventurous straight men, practice the ancient form of lovemaking known as punching shit.

punching shit by Ichiban38 September 17, 2007

Pinching a no shitter 

Not having the time to take a shit all day even though you know you have to. Or if there is not a place to take a shit.

When you are on a first date and you know you can't excuse yourself to take the kids to the pool.

When you are riding with your boss all day and know you can't ask your boss to pull over so you can have a shit.

On your first day at the new office when you can't ask the receptionist or your new boss where the bathroom is only to be gone for 20 minutes dropping the bomb.

I was up against two deadlines and had meetings throughout the day - I had to drop a deuce but I knew I would be pinching a no shitter which made me sweat and my guts quiver.

Pinching a no shitter by Deuce Bigelow February 4, 2014

Pinching a No-Shitter 

To go all day without taking a shit, in reference to baseball's "pitching a no hitter".

John was so busy at work today, he was pinching a no-shitter.

Pinching a No-Shitter by jhook October 25, 2012