In his defense, what else is there to do at a tennis match? ;-)
Seriesly though...the guy runs around calling himself "The Hoff", so I'm guessing that he has a slight ego problem along with the booze problem.
At least he didn't do this: http://us.news3.yimg.com/us.i2.yimg.com/p/ap/20060704/capt.305dba53968c47949b2070f8999a2c80.aptopix_britain_wimbledon_tennis_xwim116.jpg?x=253&y=345&sig=gRS83ogAQmXZZfNJDt2EKQ--
Yep. Booze wins.
Hasselhoff developed an inferiority complex (at least it grew into huge proportions) when getting into conversations with a Pontiac Trans-Am with a flashing light across the front of its hood. The car was ALWAYS a lot smarter, and never failed to remind "Michael" of the fact.