Fhat the wuck
A rather inconspicuous way of saying "what the fuck" can be used in front of parents, at church, in front of old people, or anywhere that the word fuck would be frowned upon.
friend 1: Hey dude did you hear Jason is getting married
friend 2: Fhat the Wuck!!?? Are you kidding me.
bob: Fhat the wuck!! I just stepped in shit.
friend 2: Fhat the Wuck!!?? Are you kidding me.
bob: Fhat the wuck!! I just stepped in shit.