picajzla

1. colloq. derog. (of a person) nitpicker; pedant; fusspot
   Ne budi takva picajzla, nije bitno! — Don't be such a nitpicker, it doesn't matter!
   Naš šef je prava picajzla za svaki zarez. — Our boss is a real stickler about every comma.
2. crab louse
   Lekar je rekao da su to picajzle. — The doctor said it was crab lice.

The word is feminine but is used of men too: on je picajzla.