A neighbor says Justin Bieber egged his home last night..

The neighbor tells TMZ he heard something banging against his house in Calabasas around 7:30 PM Thursday, and when he stepped on to a 2nd floor balcony, he says he saw Justin down below hurling eggs at his front door.

According to the neighbor, Bieber started aiming for him once he stepped onto the balcony and yelled, "What the Hell are you doing?"

Justin and the neighbor have had previous run-ins.

They also got into a verbal dispute while Biebs kept tossing a few more eggs at the house, and then returned to his home.

The neighbor called the Sheriff's Department. He believes his house was pelted with no less than 20 eggs.

Law enforcement sources confirm deputies responded, and took an incident report from the neighbor.