David Labiosa is an American actor who had various television appearances. He was in such shows as The Powers of Matthew Star, Silk Stalkings, Diagnosis Murder, NYPD Blue, CSI: Miami, and JAG.Labiosa's most recognizable role was as the fired busboy in the Seinfeld episode "The Busboy". Labiosa plays Antonio, who was fired after George Costanza and Elaine Benes lightly criticised him for leaving a menu to light on fire. George and Kramer go to apologize to the intimidating and muscular Antonio.