Mouth date 

A casual hookup between either a girl or a boy, wherein oral sex is the main objective

She's my mouth date now

Mouth date by Qt68 December 22, 2016

Moutheater

A term used in the realm of Industrial music to define a deceiver. One who is an expert of manipulation who uses others to control and get what he/she desires. The term "Mouth" refers to the ability to speak and offer opinion and demonstrate free well while "Eater" is the consumption of this freedom, or the taking away a person's individuality. The song "Moutheater" by the American Coldwave Industrial band 16 Volt, is this word's claim to fame in the realm of Industrial enthusiasts.

"Erika told me she would be there for me, she left me with nothing and betrayed me. She was a Moutheater and I couldn't even see it

Moutheater by King Herne April 2, 2013

Mouthwater 

The saliva that comes out of your mouth when you feel like you are about to throw up.

Something that tastes so juicy.

Oh my god I have mouthwater, uhhh.

Oh its so good it tastes like mouthwater.

Mouthwater by joel g October 10, 2008