N. A person in a state of horniness derived from mass consumption of oysters. From the English "Horny" (a feeling of randy-ness) and "Oyster " (a slimy muscle of the see). The term was coined by 3 ballers at Oyster Fest 2013.
Dude, I ate so many oysters, I'm such a hoyster.
Dude, you wanna shuck some hoysters tonight?