I’ve seen this around the SDMB a few times - usually constructed along the lines of:
“cabbage and onion and fish… oh my!” or similar (ie. x and x and x… oh my!")
When I read quotes like that it niggles something deep in my brain which tells me I should know where it’s from - can anyone enlighten me…?
“Lions and tigers and bears, oh my!”
Lions and tigers and bears, oh my!"
Lions and tigers and bears, oh my!"
The Wizard of Oz, 1939.
Uhm, The Wizard of Oz, I believe.
“Lions and Tigers and Bears, oh my!”
Marvellous - thank you both!
I had a feeling it was WoOz, but it’s been ages since I saw the film so couldn’t quite put my finger on it. 
This is spoken - or sung, I suppose, in a rhythmic cadence - just before they run into a fearsome… lion!
Or is that cowardly lion?
More of a chant, actually.