Fish joke for Monday-itis: Define “oyster”. Posted on 2015/05/312015/02/09 by TheFishVet - Richmond's School of Fish Oyster, n. A person who sprinkles his conversation with Yiddishisms. Have a FINtastic week! R <+>{ Share this: Share on Facebook (Opens in new window) Facebook Share on X (Opens in new window) X Share on LinkedIn (Opens in new window) LinkedIn Email a link to a friend (Opens in new window) Email Print (Opens in new window) Print Like Loading... Published by TheFishVet - Richmond's School of Fish Aquatic veterinary medicine, pathology and educational services for fish. A repository for useful information and events. View all posts by TheFishVet - Richmond's School of Fish