rock around
To sway, tilt, or shake back and forth, side to side. The suspension on my uncle's old truck was totally shot, so we just kept rocking around as drove through the bumpy back roads on his land. The ship rocked around as the storm hammered it with waves and heavy winds.
rock around
to tilt or totter about. The boat rocked around, tossing the passengers to and fro. The road was bumpy and the huge car rocked around.