comes from the acronym W.A.F.U. which stands for "Women Are Fucked Up" the condition that universally applies to all females, and is the only explanation needed to makesense of any illogical or otherwise insane behavior they frequently exhibit.
Dave: So yeah, my girlfriend broke up with me, and now shes backwith her ex who beats her.
Frank: Wafu man, wafu.
"Dishoom" is the old sound effect used when someone would punch someone else(<i>a la</i> "pow!" or "bam!" or "sock!") in old Bollywood movies. Splendidly appropriated by Badmash.org's Flash parody of the 2004 Presidential debate.