Put on some sleeves and give a girl some chocolate

On Monday's Big Bang Theory, which was a bit less funny than usual, two main storylines happened. 1) Howard and Raj dressed up in gothic attire and went to a Goth club hoping to meet girls. But when one asked them to get a tattoo, they chickened out. 2) Sheldon tried to condition Penny by feeding her chocolate as positive reinforcement for appropriate behavior much to the disgust of Leonard who does not want Sheldon training his girlfriend. Though it did seem to be working.