The guys are playing Halo and Penny comes in their apartment cos a slutty friend of hers is staying at her house. Wolowitz leaves the house to go do it with her. Penny then joins in with Halo, much to Sheldons annoyance (which is pretty hilarious). Wolowitz doesn't hang out with the gang anymore, but stays doing it with that gold digger as long as Wolowitz keeps buying her stuff. The Halo bit at the beginning was so hilarious. I seriously cannot stop watching that clip. I absolutely love this show. This episode made me fall in love with this show.
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