It’s easy to laugh at poor George Costanza for his shrunken manhood, but some reports suggest that only about 55% of men are satisfied with their penis size. Some men actually seek potentially dangerous surgical solutions to a problem that  is often only in their head. Clearly men have a very distorted picture of what the average size is or what the best size is for optimal sexual performance. A number of studies have tried to understand this cultural connotation with penis size and sexual performance.