dobacivati

1. to throw; to toss
   Deca su na plaži dobacivala loptu jedno drugom. — The kids on the beach were tossing the ball to each other.
2. (to someone) to heckle; to shout remarks; to catcall
   Neko iz publike je stalno dobacivao govorniku. — Someone in the audience kept heckling the speaker.
   Momci na ćošku su dobacivali devojkama. — The guys on the corner were catcalling the girls.

The person something is thrown or shouted at is in the dative: dobacivati nekome.