The act of your elbow slipping off the bar with a drink in your hand and not spilling a drop
After his drink he gave a Irish salute
Someone who talks to a girl and makes them feel really special and kisses them and then goes back to their ex just to play her and then lead her on again and acts like a douchebag to everyone and can't understand that you need to pick one girl and not two.
Jess: "Did you hear about that guy I was talking to?"
Sarah: "Yeah, he's such a fuckboy. Don't trust him. I heard he kissed a girl and took his ex back."