TMZ.com: Cardi B Allegedly Went Berserk at 'SNL' Rehearsal Over 'Weekend Update' Nicki Minaj Joke - CARDI B ALLEGEDLY BLEW UP OVER 'SNL' NICKI MINAJ JOKE ... Cardi B made "Saturday Night Live's" 1,000th episode one to remember ... allegedly for all the wrong reasons - according to our sources ...