Possible Clues:

• Speak after bartender initially identifies one who spills a lot?
• Spread measures of drink for one who can't hold it?
• Clumsy person's nickname
• Very bad catcher
• Blood group, say, identifies such a clumsy individual
• Time to tuck into finest burger concoction — oops, dropped it!
• One who fails to hold a catch
• Careless person
• Clumsy type
• Refined frigid brunettes I'd abandoned -- one wouldn't make much of a catch!