Anthony Weiner yells at a voter with a mouth full of cake

Just a few hours before the start of Rosh Hashanah on Wednesday, a customer at a kosher bakery provoked the famously volatile Anthony Weiner, heckling the only Jewish candidate in the New York City mayoral race for being "married to an Arab."

Weiner was leaving the Brooklyn bakery after greeting people shopping for sweets when, according to video of the nasty exchange, a hostile man wearing a yarmulke called the scandal-plagued Democrat a "scumbag."

"Takes one to know one, jackass!" Weiner shot back, with a mouth full of cake.