Yes, Ed, and TPowell:
That's MIKEY, musta been 1976'ish.
"...let's let Mikey try it !". (new cereal or food), a couple kids say:, followed by an enthused Mikey diving in to consume dish.
"Hey !!! ....He likes it: Mikey likes it!"
I don't remember much snarky fad after-effect, though. (No joke references, about SEX, drugs, etc.