The act of licking with great enthusiasm, so much that it appears as if the licker
is attempting to lift the entire body weight of the lickee
using only the tongue.
Analagous to a floor jack lifting a car.
Used for describing the act of cunnilingus
, or non literally as an eager ass kisser
or brown noser
I tongue jacked her so hard, I lisped for three days afterward.
She asked me not to tongue jack her until the friction burns healed.
No need to tongue jack my shitbox
, I'll lend you the money.