Little Bunny Who Who??

So in pre-k today, we are reintroducing the wonderful book/song "Little Bunny Foo Foo" and I say to the 3 year old class, "Does anyone remember the name of our little bunny from last year?" and they say didn't answer so I told them, "Little Bunny Foo Foo!" and a little girl says, "yeah! Little Bunny Poo Poo!"