bombast (BOM-bast) noun
Pompous speech or writing.
[From Old French bombace (cotton padding), from Latin bombax (cotton).]
"The much-unloved advertising slogan proclaiming Scotland as 'The Best Small Country in the World' is ... seen to combine the worst of both bombast and cringe."
-- Robbie Dinwoodie; Best Small Country in the World; The Herald (Glasgow, Scotland); Sep 10, 2007.