A juvenile Knock Knock joke involving Bananas

My informant told me the following joke, which she claims to have heard from a six-year old boy:

Informant: Knock knock

Me: Who’s there?

Informant: Banana

Me: Banana who?

Informant: Bannana in your face! Haha

 

While not as intrinsically complex or cultural revealing as much other folklore, given that my informant heard this joke from a six year old child at an Elementary School, it serves to illustrate the developing humor of adolescents, a difficult test subject to gather information from. Furthermore, given that the informant remembered this joke and still finds it humorous, it shows how sometimes the simplest amusements carry a charm which transcends all age boundaries.