So what's the worst chat up lines you've heard or have heard someone else use? For me, it has to be "Is your dad an alien? Because you're out of this world?" I didn't say it, but a friend's friend preparing for a long to get closer to the girl he liked, and when he saw her at a party he just blurted out: "Babe, is your dad an alien? Because you're out of this world!" The girl tried not to laugh, but a few seconds later completely failed, laughed loudly in his face and walked off laughing. He didn't try to chat her up again lol.