throat fisting 

Otherwise known as tonsil touching, it is a method often used by children in school as a way to fake being sick involving shoving one's fist down another's throat in order to invoke the gag reflex.
It also has found use in the bedroom of some particularly messed up people.

1. Thanks to a bit of throat fisting Jeff and I got out of school early!
2. Are you down for a bit of throat fisting tonight baby?

throat fisting by JefferytheCasualMeme August 28, 2016

Throatfishing 

The act of shoving your tongue down your significant others throat and them doing the same to you. Mostly done in public

Jacob and Sophia were throatfishing in the hallway today

Throatfishing by CalebWilliamPoland August 7, 2016