pospanko

1. colloq. affect. sleepyhead
   Ustaj, pospanko, zakasnićeš u školu! — Get up, sleepyhead, you'll be late for school!
   Naš mali pospanko je opet zaspao na kauču. — Our little sleepyhead fell asleep on the couch again.

Usually an affectionate form of address, mostly to a child; for a girl, pospanka.