balav

1. colloq. derog. (of a person) wet behind the ears; immature
   Još si balav za takve stvari. — You're still too young for that kind of thing.
   Bio sam balav kad sam počeo da radim. — I was just a kid when I started working.
2. snotty; slobbery
   Dete je imalo balav nos i prljave ruke. — The child had a runny nose and dirty hands.

For an immature person the nouns balavac / balavica are often used instead.