Now, the picture, I don't know how to explain it. Everything which is obvious is there.
Ami-Dixie, the ever-energetic sweet trap/dickgirl/herm/whatever she is, in some kind of banana infested utopia. Endless deep seas of creamy banana pudding, Banana slices swimming around as lilypads, islands of bananas and bushes of whipped bananaflavoured cream. It's the world of banana dreams.

She seems to be riding on which seems to be a levitating banana.

This could be the world changed to a banana cuckooland. It could be an alternate universe, another planet, or another plane of existance. All we need to know is that she's having fun.