Have you ever rudely laughed in someone's face?

Once my sister-in-law called me and sounded a little funny. Then she told me she'd been pulling the nail out of the wall that their Christmas tree was tied to and the head came off the nail and the hammer hit her in the mouth. I do not normally laugh when people fall or similar things, but when she said "So if you get a phone call and somebody says, "SDFLOIUEWR" it's me. I didn't sober up for 6 or 8 hours.
So, yes. Only it wasn't her face, it was a phone receiver. Back when phones had receivers.