look up any word, like fellated:
 
1.
yummo- from the root word 'yum' (a phrase used to compliment the delicious food that has or will grace your tongue with its presence) with an added suffix of 'mo' (meaning method of operation) to show that yum is the way you do things
YUMMO most delicious apple.
by MD333 May 26, 2010
 
2.
very delicious. created by michelle stevens my bpfl :D
omfg edgar that cookie dough is yummo.
by Michelle stevens August 31, 2007