dumbslip 

Dumbslip is a mistake in pronouncing or spelling of a word. Dumbslip is an identification of something you know about but mistaken for something else.
Dumbslip means saying or doing something that is not correct.
Dumbslip is not really being a dumbshit, just an oversight in a detail that a person does that is a little embarrassing.

A guy introduces his new wife to a group of co-workers, later, someone in the groupdumbsliped and called her by his former wife's name.
Is my dumbslip showing? I just gave my social security number to the cashier when she asked for my zip code.
I dumbsliped the spelling of my mother's maiden name, now my bank is giving me grief on my security questions.

dumbslip by Tonni the tiger November 3, 2010

dumbflip 

dumbflip a non vulgar way of calling someone a dumbfuck when profanity is not appropriate or unwanted

that dumbflip is too stupid to know his ass from a hole in the ground

dumbflip by littlejimmie February 27, 2019

Dumbship 

A neighborship that turned into a relationship that turned into a friendship that turned dumb cause one person was always too busy for the other one.

Hey wanna hang out any day in the next month, friend? Sorry. I’m just too busy all of the time for people named Jenny. This is definitely a dumbship.

Dumbship by A little Jenny April 21, 2021