shutter speed 

Shutter Speed: Adj. The amount of time it takes an anus to return to "closed" after use (often a result of age or rectal abuse or exploration.)

John's ass has a low shutter speed leading to frequent sharts.

shutter speed by Fullbird1970 May 2, 2014

Low Shutter Speed

noun.

-the disorder of a victims sphincter not closing in time during a questionable fart, in turn releasing poo into said victims pants. Must happen on more that one occasion during a day to qualify. Victims with illness may be void. (decided by closest peers, on a hilarity sliding scale. ie. amount, frequency, smell, and victim's initial reaction upon release of said shart)

ex.

Victim: "Hey smell this fart! (plop) Oh, No!!!!!!! Curse this LOW SHUTTER SPEED! That's twice in one day now, god dammit!"
friend: "Oh, man! Classic, dude! Your running out of pants faster than the nursing home on enchilada night!
Victim: "Shut up!"
Friend: "You might wanna get that LOW SHUTTER SPEED looked at, man."

Low Shutter Speed by big1jc November 24, 2011

Shitter speed 

The speed in which you run to the shitter.

My shitter speed is really fast.

Shitter speed by Adam at NCL June 12, 2018