Related:

• Milton Berle does it in his BVDs.
• Knock, Knock. Who's there? Opportunity. Don't be silly - opportunity doesn't knock twice!
• Committee: a group of men who keep minutes and waste hours. -- Milton Berle
• A committee is a group that keeps the minutes and loses hours. -- Milton Berle
• Remember that opportunity is a dare - not a door.
• Knock, Knock. Who's there? Opportunity. Don't be silly - opportunity doesn't knock twice!
  -- Norman Dale...
• He's so old that when he orders a three-minute egg, they ask for the money up front.
  -- Milton Berle...
• I feel like a 20-year old! Unfortunately, there aren't any here.
  -- Milton Berle, at his 80th birthday party...
• Knock. Don't ring bell. -- Seen on Pavlov's doo