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More colorful version of "What the fuck?" most often used when caught off-guard by loud sounds or animals flying past your face too fast to tell what they are; also during moments of self-reflection brought on by new sets of facts or personal epiphanies.
30 year old at Spring Break upon realizing he's a 30 year old at Spring Break: "Dufuck I'm doing here?"

20 year old at Spring Break upon seeing 30 year old at Spring Break: "Dufuck he's doing here?"

Everyone at Spring Break when DMX grabs the mic and grunts nonsensically: "Dufuck he just say??"
by publicationsamples April 26, 2014
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