Slim Thug's dinner was rudely interrupted by cops serving bad news -- crooks rolled his Rolls-Royce in the restaurant parking lot.
Slim tells TMZ ... he was having a business meeting over dinner at a Houston's ... in Houston, when someone smashed one window on his 2015 Rolls-Royce Wraith, and stole an iPhone. Cops tells us the whole caper was captured on security cameras, and the footage is key to their investigation.
Even though they only broke one window, it's a Rolls window. Slim says repairs will cost about $10k because the shattered glass messed up his leather and his paint job.
Silver linings? Insurance will cover the damage, and he enjoyed a delicious Hawaiian Rib-eye steak!