I guess you didn't like the concert

My friends brother knew a venue owner and got free front row tickets to one of his concerts. He never really heard of Dave before (despite his immense popularity). Either way he goes back to his hotel he's staying at and decides to use the bathroom in the lobby. He goes to use the urinal and guess who is pissing right next to him. That's right Dave. "I guess you didn't like the concert" Dave said while laughing. Dave remembered this guy and then proceeded to invite him to hang out with him on the tour bus to meet and party a little with the band.