in thunderation?

Used as an intensifier after a question word (who, what, where, when, why, and how) to express extreme confusion, surprise, or aggravation. Primarily heard in US. And just how in thunderation am I supposed to have three reports done by 9 AM tomorrow? Where in thunderation did you find that rusty old car? Who in thunderation is making all that noise?

Common Names:

Name	Pronounced	Usage
Gyneth	-	Literature
Ferdinand	FER-dee-nahnt (German, Dutch), FUR-di-nand (English), FER-dee-nahnd (Finnish)	German, French, Dutch, English, Czech, Slovene, Finnish, Ancient Germanic
Herakleides	-	Ancient Greek
Siegfried	ZEEK-freet (German)	German, Germanic Mythology
Shelly	['ʃeli]
Alexej	-	Czech, Slovak