Has anyone ever drunk from a cup or gl that wasn't cylindrical?

I figured the bowl-shaped one is a possibility. I wonder if there's anyone that has ever consumed a beverage from a cup, gl, or bottle that's square-shaped? Or how about a conical, ovular, or triangular one? I guess a flask might work. Is there anything else? Has anyone ever drunk from an actual rim of a gl, bottle, or cup that was not circular shaped? That's what I'm really wondering.