Are you flummoxed?

well . . . are you?

- Cambridge Dictionary: 

to confuse someone so much that they do not know what to do:

I have to say that last question flummoxed me.

- Etymology: 

1837, cant word, also flummux, of uncertain origin, probably risen out of a British dialect (OED finds candidate words in Herefordshire, Gloucestershire, southern Cheshire, and Sheffield). "The formation seems to be onomatopœic, expressive of the notion of throwing down roughly and untidily" [OED]. Related: Flummoxed; flummoxing.

For more: Confuse-A-Cat ~ Monty Python's Flying Circus.