It was Chris's birthday. And he invited you to karaoke. It was just the two of you at karaoke. At first you were shy, but after a couple of drinks you stopped worrying about how well you sing and so on. At some point when you were singing, Chris pulled your head to him and started kissing you on the lips. Now you're lying on the couch, he's on top, and Chris is kissing you deeper and deeper "Oh, I'm sorry~" he said in a hoarse voice, got off you and started singing on, as if nothing had happened