I think it originated back in 2000 or 2001.
When I was a kid (I grew up in the 90s) there was this Frosted Flakes ad with a song that went:
Hey Tony! I like the things you do!
Hey Tony! If I could I would be you!
The one and only tiger, with the one and only taste,
You know how to take a breakfast and make it. . .
GRRRREAT!
Frosted Flakes are more than good:
They're GRRRREAT!!
Is this one of the ads you're talking about?
(Damn, it's really sad that I actually remember this. :shock: )