Bill Cosby Does Standup on 'Tonight Show' -- Sitting Down (VIDEO)

Getting older may have its annoyances, but it creates a new form of comedy, Bill Cosby explained on a visit to 'The Tonight Show' (weeknights, 11:35PM ET on NBC). The comedian did some standup -- sitting down.

In his experience, what would normally be a two-second greeting exchanged over the phone turned into several minutes of miscommunication, with his friend Johnny eventually saying, "What's your problem?!" Cosby's exasperated wife then got involved.