Just as British funnymen Ricky Gervais and Simon Pegg have resolved to patch up their "fat idiot" feud, along come Sarah Silverman and Jackie Mason to fill the void with their own bit of culturally specific warring. Perhaps you'll recall Silverman's recent video for thegreatschlep.com, an organization designed to coax young, Jewish Obama supporters to travel to Florida and convince their grandparents to vote Democrat. Creaky comic Mason is not a fan of this idea (to put it mildly) and in an ad paid for by a Jewish Republicans group, he tears into both Obama and Silverman, calling the latter a "sick yenta." Careful, Jackie — if Silverman can handle talking shit about her ex-boyfriend Jimmy Kimmel, she's not going to be daunted by your dated patter. Both videos, after the jump: