airhead?

Question

I do you communicate the idea, "I'm an airhead!" in a humorous way'

Answer 1

This word can be translated from some forms
-Despistado/a
-Cantamañanas
-Cabeza hueca
-Cabeza de chorlito

Answer 2

¿Cantamañanas? ¡Me quito el sombrero, Mogor! Tus opciones son perfectas.

I'd personally chose one of the last two from Mogor's options as best translations.

Other funny option: tarambana.