Jebemu

South-Slavic for Fuck or even in some cases Fuck it. Common variations of this word are:
Jebemu mater (to motherfuck, literally translates to: " I fuck his mother" and similar contexts)
Majojebac (Motherfucker)
Jerbemu/Hebemu (A family friendly version of jebemu)
Most commonly used to express anger, dissatisfaction and negative feelings in general. Also frequently heard in traffic jams on the Balkans.

1: *stubs toe* JEBEMU!