1) A person who throws rocks at you or your property from a distance and then runs away.
2) A person who likes to play "poke the bear" with people who he thinks will take it lightly and laugh it off.
1) The young Rocksama wantsama enjoyed throwing rocks from the suburban bridge onto boats parked in the marina below.
2) When the Rocksama wantsama toyed with the old shitter pump mechanic he was promptly hit across the back of the head with a shovel. He then went to cry about it to the dude who had the office duck collection.