Man French Kisses Giraffe On 'Outrageous Acts Of Science' (VIDEO)

Do you get annoyed when someone slips you the tongue when you don't expect it? Well, it's even worse when it's a giraffe.

Those animals have tongues that average 20 inches in length, usually colored an ugly dark black, blue, or purple.

The clip above from an upcoming episode of "Outrageous Acts Of Science" shows a zookeeper from the Out Of Africa park in Camp Verde Arizona, feeding a giraffe by holding a biscuit and getting Frenched and drenched by the animal's long dark and very muscular tongue.

Spoiler alert: It isn't pretty. To be fair, the giraffe's tongue isn't designed for making out with other giraffes -- it's for survival, according to Australian biologist Chris Krishna-Pillay.

"Giraffes are browser animals so they browse amongst trees," Krishna-Pillay told "Outrageous Acts Of Science." "Their height means they can get very high up, but that's not enough. Some of the trees they like to browse on are acacia trees which has evolved these really sharp spines in order to try and stop animals eating their foliage, so the giraffe's long tongue can reach in between those spines and grip the leaf and tear it off."

If the idea of having a 20-inch tongue shoved down your throat sounds disgusting, it's even more stomach-churning when you realize how much sloppy, gloopy spit is on that tongue.

Again, biology didn't design giraffe tongues for French kissing. The ooey-gooey giraffe saliva is supposed to protect the giraffe from being bitten by ants on the lips and tongue.

Think about that the next time you go in for the deep kiss.

"Outrageous Acts Of Science" airs Saturdays on Discovery Science.

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