I'm hanged if I know!

I have absolutely no idea! I'm hanged if I know how to fill out these tax forms! A: "How are you supposed to turn on this newfangled computer?" B: "I'm hanged if I know!" Why is the sky blue? I'm hanged if I know! Go ask your father, maybe he knows!

See also: hanged, if

See also:

be at a disadvantage
at a disadvantage
address comments or remarks to
address (one's) comments to (someone or something)
address (one's) remarks to (someone or something)
be (as) serious as a heart attack
as you know
(the) odds are against (something)
be (as) hearty as a buck
a run on (something)

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