who ▁was ▁by ▁then ▁in ▁his ▁mid ▁eight ies , ▁in ▁ill ▁health ▁and ▁ment ally ▁comprom ised — and ▁was ▁probably ▁una ware ▁that ▁Marx ▁had ▁specifically ▁denied ▁making ▁the ▁observation . ▁Another ▁an ec d ote ▁that ▁may ▁or ▁may ▁not ▁be ▁ap oc ry phal ▁rec ount s ▁how ▁Warner ▁Brothers ▁threatened ▁to ▁sue ▁Gr ou cho ▁when ▁they ▁learned ▁that ▁the ▁next ▁Marx ▁Brothers ▁film ▁was ▁to ▁be ▁called ▁" A ▁Night ▁in ▁Cas ab lan ca ", ▁cont ending ▁that ▁that ▁title ▁was ▁too ▁similar ▁to ▁their ▁own ▁film ▁Cas ab lan ca . ▁ ▁Gr ou cho ▁is ▁reported ▁to ▁have ▁replied : ▁" I ' ll ▁sue ▁you ▁for ▁using ▁the ▁word ▁Brothers ." ▁ ▁Other ▁work ▁ ▁By ▁the ▁time ▁You ▁Bet ▁Your ▁Life ▁deb uted ▁on ▁TV ▁on ▁October ▁ 5 , ▁ 1 9 5 0 , ▁Marx ▁had ▁grown ▁a ▁real ▁must ache ▁( which ▁he ▁had ▁already ▁sport ed ▁earlier ▁in ▁the ▁films ▁Cop ac ab ana ▁and ▁Love ▁Happy ). ▁ ▁During ▁a ▁tour ▁of ▁Germany ▁in ▁ 1 9 5 8 , ▁accompanied ▁by ▁then - w ife ▁E den , ▁daughter ▁Mel inda , ▁Robert ▁D wan ▁and ▁D wan ' s ▁daughter ▁Jud ith , ▁he ▁clim bed ▁a ▁p ile ▁of ▁rub ble ▁that ▁marked ▁the ▁site ▁of ▁Adolf ▁Hitler ' s ▁b unker , ▁the ▁site ▁of ▁Hitler ' s ▁death , ▁and ▁performed ▁a ▁two - min ute ▁Char l eston . ▁He ▁later