1. The act of a person or animal vomiting into the mouth or nose of another person or animal, the recipient of which then returns the vomit they just received back into the donor mouth, this cycle usually continues until someone is sexually gratified.

A varient of this exists that uses fecal matter in exactly the same way.
"Hey, man, did you see how Sevac's mom face docked with his dad last night, it was wicked sick dog, I threw up myself." Face Docking is a sexual practice.
by Zeure April 13, 2010
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