It's bananas!

Littlebat: (Standing on a chair that he just pushed up to the counter, reaching for the fruit basket.) Baaaana, baaaana! (while frantically signing "banana")

Mamabat: Oh, you want a banana?

Lb: No!

Mb: Okay, well you are going to have to get down.

Lb: Baaaana! Baaana! (still signing)

Mb: (Lifting him off the chair.) So you do want a banana?

Lb: No! (pause) Baaana!

Mb: The correct answer is YES.

Lb: Yesh!

Mb: That's right! Say it like this: Banana? Yes!

Lb: Yesh, yesh... baana. Num NUM!!

Mb: Good. Okay, here you go! (Peeling banana and handing it to him.)

Lb: Baana? No.