shitfister 

One who fists in the ass, especially after ones partner has not wiped after a shit

That Underwood is a real shitfister

shitfister by gek of Arabia October 9, 2004

shitmaster 

One who possesses the ability to clog someone's toilet to the point of OVERFLOW (not merely backup or slow flush) causing shitty water to cover the entire tile floor and parts of the adjacent hallway carpeting. This is not intentional, and happens despite multiple courtesy flushes throughout the act leading to the final shitmastering flush.

Dave: (Running out of the bathroom) Where's your mop bro?

Me: What? Why?

Dave: Your toilet's overflowing man. Shit is literally EVERYWHERE!

Me: You're the fucking shitmaster dude... mad props. Now go clean it up.

shitmaster by Elias Creed May 8, 2007

shitster 

adj. One who causes trouble, especially for others - a contraction of "shit stirrer".

Joey just lied to his older sister about nailing her best friend - what a shitster!

shitster by jim October 3, 2003

shitposter 

A person who regularly submits terrible or nonsensical posts to an internet forum.

These shitposters are screwing up the forums!

shitposter by homer55 August 4, 2007

shitfarter

A guy at your job who takes more than 3 shits in an 8 hour workday.

Can you believe Shitfarter is STILL in the bathroom. He has already ruined stall #3, and now he's going to take out #4.

shitfarter by Monkey McMurtelstein March 7, 2005

shitmester 

(Noun) A college semester in which one's schedule is composed of mainly requisite and difficult courses that do not pertain to their major, minor, or area of interest.

Victoria: "Registering for classes makes me want to throw up."
Erin: "I know, Spring '15 is going to be a shitmester."
Victoria: "SAME- I'm taking poly science and a science lab... I'm a communications major."

shitmester by Collegestudent22 November 6, 2014

Shitfinger 

The result when one's finger(s) rip through the toilet paper and protrude into the anus during post-defecation cleanup.

This cheap goddamn toilet paper again? I get shitfinger every time I wipe with this.

Shitfinger by Joe_C388 June 11, 2011