Tabitha Boas Share definition Flag Someone who fucks your baby daddy while you pregnant. Cheats all the time. Has no friends, and is fake af. Don't go near a Tabitha Boas. "Hey, you see her?" "Yeah." "She's such a Tabitha Boas, don't let her near your man." Tabitha Boas by Supertotallynotyoursister April 23, 2020 Get the Tabitha Boas mug.