Justin Bieber's egg-throwing escapade Thursday night caused around $20,000 in damage, and he hasn't even called his neighbor to apologize.

The Biebs was caught on video egging his neighbor's house, and when confronted the singer told the neighbor to f*** off and then hurled a few more eggs.

L.A. County Sheriff's deputies are fast-tracking the investigation and they told the neighbor he had to get them repair estimates by today.

To fix the damage, which is especially expensive because it's Venetian plaster, will cost around $15K. There's another $5,000 in damage to the entry, including various doors that must be re-stained.

TMZ has video from the incident, it's dark but the person yelling back at the neighbor sure sounds like Justin. WARNING: Very Strong Language