(I'll be) hanged if I know!

I have absolutely no idea! A: "How are you supposed to turn on this newfangled computer?" B: "Hanged if I know!" I'll be hanged if I know how to fill out these tax forms!

Common Names:

Name	Pronounced	Usage
Tineke	-	Dutch
Prudencio	proo-DHEN-thyo (Spanish), proo-DHEN-syo (Latin American Spanish)	Spanish
Xeno	-	Ancient Greek
Bobbie	['bɔbi]
Payton	PAY-tən	English (Modern)
Laurel	['lɔrəl]