hoof and mouth 

The act of giving head while giving a foot job. A prime example of which can be viewed in the fetish dolls series of films.

I dated a ballerina once; she liked to go all Hoof and Mouth on me.

hoof and mouth by Eric ELFman March 31, 2008

human hoof and mouth disease 

What you may eventually contract from habitually being careless of what you say.

If chronic lack of verbal inhibition is an issue for you, one possible way to lessen the chance of coming down with human hoof and mouth disease is to wash your feet several times a day and only walk on clean surfaces.

human hoof and mouth disease by QuacksO April 30, 2020