by dbj737 July 21, 2010

Chum Chum is extra fat/flab that is on you're forehead. This can also be related to fat layers on the foreskin.
by Tado October 12, 2009

Act(s) that lead(s) up to and includes sexual intercourse (i.e. making out, hugging in "that way", etc.)
by Mars November 9, 2003

1."Yo i was in da yard rite and den i bent down and dis nigga tried to take my fuckin chum chums son."
by Choe May 13, 2006

fat or chubbiness
by DA BOY Nizzle April 28, 2003

Chum chum basically means banana. It's a social experiment to see if we can create new meaning to a word by Hank Green from Crash course on youtube.
The chum chum I bought last week is so delicous.
Not all chum chums are yellow.
My girlfriend likes chum chum.
Not all chum chums are yellow.
My girlfriend likes chum chum.
by PirateKingPhoenix July 5, 2017
