Warning: Grocery-shopping next to The Real Housewives of Beverly Hills' Kim Richards may be hazardous to your health!

On Jan. 17, inside a Santa Monica Whole Foods, Kim, 50, "approached a store clerk and asked him for salmon salad," says a fellow shopper. "He politely told her they may not have any."

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Wrong answer! "She went ballistic on him," says the witness. "She threw her basket and all her food at him, screaming, 'What does it matter, anyway?' Then she ran out of the store!"

Man, we thought Kim had turned over a new leaf after seeking help for her drinking and depression. Here's hoping she doesn't slide any further downhill.

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