mustardfoot 

Someone who starts a task they are completely capable of and does not finish it.

Person 1: Hey dude, could you work on this for me?
Person 2: Sure, I'll be done within a week!

-a week later-

Person 1: Hey, that thing done yet?
Person 2: Nah dude I forgot, sorry. I'm not really motivated to do it anymore.
Person 1: Wow, you're such a mustardfoot.

mustardfoot by mustardfoot August 19, 2017

mustardfoot 

A person who will ignore working on a said task over and over

wow, my co-worker is being such a mustardfoot

mustardfoot by FunnyFace29 August 19, 2017

Mustardmouth 

Mustardmouth is a descriptive word used to poke fun at a person with yellow teeth. The term was coined by a viewer in a TwitchTV chat room, in late October of 2018, during a live broadcast of the “Bubba the Love Sponge” radio show. The host of the show (Bubba) was ribbing a co-host (tuddle) about his dirty yellow teeth and referred to tuddles smile as the “yellow bridge”, when the viewer typed back a paraphrased version of the cutdown “Mustardmouth”. The moniker stuck and now tuddle is forever known as “Mustardmouth”

TODD - Is Patrick on meth and chewing tobacco? His teeth are really yellow.

BUCK - Yeah, he has a real Mustardmouth. Hahahaha

Mustardmouth by Dean Gallberry March 13, 2019

Mustard Foot 

To have smelly feet or some funky shit growing on your foot.

Damn, did you smell her feet in the car? Yea, that's some straight-up Mustard Foot dawg.

Mustard Foot by Nagnal August 15, 2019