Crusting

The act of placing pizza crust between one’s toes.

We were enjoying pizza in bed, and then he started crusting me.

Crusting

The act of making a jelly sandwich and using it as a pleasure toy until climax, crating a PP & J sandwich that the significant other eats off of the man’s genitalia.

Get the bread, it’s crusting time!

winter crust

When you fail to moisturize your lips in the winter, and your lips get crusty af.

Becky: "Oh my god, it's Jake!"
Samantha: "No girl, stay away, I see that winter crust on his lips."