i will confirm the tub of Garlic Dip move-ment in my fridge, has been solved.

years ago upon opening my fridge i watched a small platic tub spin 20 degrees counter clock-wise. a once in 40 year observation.

i have now solved this; as the fridge door was opened, it acted like a wind pump, bringing a rush of air counter-clockwise thru the refridgerator; the condensation or perhaps sublimation on the chip dip container overcame static friction allowing the spinning movement.