im-pu-dent
- possessed of unblushing presumption, effrontery, or assurance; shamelessly forward, insolently disrespectful
(from The Oxford English Dictionary)
- audacious, bold, brazen, cheeky, impertinent, pert, sassy, saucy
(from The Synonym Finder, J. I. Rodale)
- Sabina, sometimes... :)