The crocodile and the Egyptian plover have a symbiotic relationship. The plover picks the remnants of the crocodile's meals from out of the crocodile's teeth and in doing so, keeps the crocodile's teeth clean. Even though the plover places itself inside the crocodile's mouth, there are no accounts of it being eaten.

Walking Dictionary

And that's how it works.

...Bwuh?

Like that!

Idiot.

The End

Mwah!

Mwah! Mwah!