Definition.com
A French kiss is a tongue wrestling match - "one, two, three, four, i declare tongue war!"
Meme.com
Definition.com
The French kiss is a delightful paradox of sorts, a conceptual tongue-twister, if you will, consisting of two tongues tasting that which tastes in the very process of their tasting, and furthermore, in the process of their tasting that which is tasting them.