Did you mayhaps mean yummy?
Etymologies
- yum + -o (Wiktionary)
Examples
“He's dead-on that it's "porky goodness", though the phrase, which he uses just a bit too often, is as grating to my ears as his nemesis 'fave, "yummo".”
“I'm just thankful I didn't have to type out "yummo" at any point while making this post.”
“Aisling is kick butt, married to a studly dragon (hello, yummo) and has a cool as beans pooch!”
“One Response on March 18, 2009 at 6: 00 pm | Reply lesliemommy yummo!!!”
“Yes | No | Report from KingFisher907 wrote 1 year 2 days ago yummo!”
“April 22, 2009 4: 13 AM thereddeer said ... mmmm looks yummo!”
“I will be obsessed until I get me some Claim Jumper .... yummo! ...”
“Mat - 9.5/10, they really tasted like Ferrero Rocher - yummo!”
“The frosting is yummo and having the secret Oreo on the bottom of the cupcake is great.”
“Met lots of lovely team HarperCollins folks, and talked books, and ate a yummo lunch at the Green Gate hotel. (thanks, Rupert!)”
Lists
‘yummo’ hasn't been added to any lists yet.
Tweets
Looking for tweets for yummo.

chained_bear Maybe it's only mostly dead. Apr 21, 2008
pterodactyl Oh, I get it. It's not quite dead -- just listless. That makes sense. Apr 21, 2008
mollusque Yarb has an Adoption agency and I have a list composed of Former ghosts.
Yummo isn't a ghost since its page says "1 wordie lists" (it's currently Laiane's least favorite word). A true ghost says "0 wordies list". Apr 21, 2008
bilby Someone used to collect ghosts and provide them with shelter. Mollusque? Apr 21, 2008
pterodactyl Aha! My very first sighting of a ghost word!
I'm not sure whether to adopt it onto a list or to run like Scooby-Doo. Apr 21, 2008