Cow tongue

[Sonia]

When someone is receiving a blowjob from their significant other and he/she licks down the shaft to the balls and keeps going; moving backwards between the legs to lick the taint and slide their tongue up the ass crack, in a similar fashion to that of a credit card swipe.

[Agnes]

The inner part of the vagina that resembles cow tongues

[Mark Zuckerberg]

a person who sucks a lot of dick (a ugly person)

[Vania]

testicles hanging out in the shape of a tongue