The word lugubrious proceeding forth from Bill's mouth is defined as:

Lugubrious: (Adjective) Excessively mournful, terribly gloomy, exaggeratedly depressed or depressive.

Guess what Bill is going to say next and win! ...(don't be diffident!)

Source(s) used for the word "lugubrious":

1. http://en.wiktionary.org/wiki/lugubrious