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To give someone's face a brutal shake until it looks like it wants to quit and go live with their ex.
My cousin face rocked me after I told him his haircut looked like a raccoon fell into a blender.
At the party, my friend face rocked me so hard I got a nosebleed and a new nickname: 'Nosebleed Nancy.'
My teacher face rocked me when I fell asleep during her history lecture about the Roman Empire.