On the wall at the "Show Biz Deli" there is a picture of Johnny Hardwick, the actor who voices Dale Gribble.
Bobby has gout, which can be caused by the crystallization of uric acids, often related to relatively high levels in the blood and can be the underlying cause of gout. This can occur because of diet, genetic predisposition, or underexcretion of urates, the salts of uric acids.
The song playing in Bobby's attempt to get to the dance is "Love Hurts" by Nazareth.