Instant karma

An guy at work grabbed me on the stairs and wouldnt let me past after I gave him an dance because I wouldnt kiss him. I never agreed to kiss him. He also refused to leave the room after the dance was finished. He wouldnt let go of my arm and then suddenly he nearly fell down the stairs and he spilt his drink. After that he stopped grabbing me. I didnt push him , he literally triped when I tried to get my arm free.