a single f-word

i was at the beach on labor day, rubbing a special blend of canola oil and lavender extract on my well-cobbled abdominals and reading the oxford english dictionary (volume vi, follow to haswed) when i happened upon the following obscure f-word:

foist, v. - to break wind silently.

¡muy fantastico! one of the usage quotes was: “spurne your hounds when they foiste.” but my question is this: if to foist is to break wind silently, how do you know which hound to spurne? and once you determine who dealt it, can you then randle yom, or is the randle reserved for humans only? i need to brush up on my farting protocol.