undertonguer

The title given to a person with a severe lack of tongue action during kissing . We’re talking less than sub 20% tongue to kiss ratio. Refer to overtonguer.

She’s a total undertonguer ... she needs to get more movement happening, it’s like kissing a mannequin

undertonguer by Chippawood April 13, 2019

undertongue 

Historically known as "the vagina of the mouth," this area has gained recent popularity among "headventurers" for remaining constantly wet and sensitive.

Headventurer:"Sheila, lets try something new"

Sheila: "oh ya, put it in my undertongue"

undertongue by Gorilla Adam December 6, 2009

Undertongue 

1. (n): Area on the bottom of the tongue where the tongue attaches to the rest of the mouth. (You know what i'm talking about- it's all veiny and full of saliva)

Girl: "I was picking my teeth with a toothpick and I slipped and stabbed my undertongue today!"

Guy: "Wow. You impaled your undertongue? Gross."

Undertongue by K Floss December 6, 2009