It's a SWISSgerman expression we use when we are tired of exhausted.
"Huf! I just ran up the stairs, that was so harsh!"
by swiss<3 June 23, 2006
When unable to remember the proceedings during which you are blacked out from drinking or drug use, This period of time is known as HUF (Hours Unaccounted For)
"fuck sake man, drank a bottle of jack and banged 3 E's, cant mind a fucking thing, at least 6 H.U.F.”
by gerald fawcett March 02, 2008