Top Definition
A chocolate bar eaten in south park. Apparently, A favorite treat of Sally Struthers the Hut
Is that a chocolate yum yum bar in your pocket?
by Anonymous September 18, 2003
after yumul bones a chick in the ass and feeds her the dirty penis, that is a chocolate yum yum bar
yumul feed stacey the chocolate yum yum bar
by A.J. January 04, 2005
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