Gutter mouth 

A person who says hateful, nasty and often false things about another person.

That woman has a gutter mouth, she's always talking trash on others.

Gutter mouth by Starshine27 April 4, 2021

Gutter Mouth 

Someone with really messed up teeth

I was watching anchorman and realized that Will Ferrell has a gutter mouth.

Gutter Mouth by brandstan02 December 25, 2021

Guttermouth

Freakin Awesome Punk Band who sings awesome songs and basically just an all around awesome band good music and singing check em out

Pee in the shower is a good song

Guttermouth by Anti-Flag Rules my name is Doug and i love Anti-Flag with a passion February 3, 2004

Guttermouth Special 

When one goes to a fast food restaurant and orders combo meals 1-10. If they have less than ten, ex. 8, order 1 and 2 again. Usually done when a large group needs a lot of food quick.

So I was at Wendy's when a big group of fat guys rushed in. They didn't wanna take the time to order for themselves so they just got a Guttermouth Special.

Guttermouth Special by VB dude August 17, 2010