Aliens Confused by English Gibberish

What is that gizmo on your head? Little doodad his son quickly said Is it a whatchamacallit or a rinky dink? Whatever you want Daddy, whatever you think. The pool-side aliens who had been listening were trying to decipher Words that made no sense, like vacuum, dust, and diaper Gizmo? Doodad? Rinky Dink? Do we have the right planet, do you think? Let’s find an easier language to study, said the Captain Little Buddy.