"cheeky Bastard" - a skit from an episode of Family Guy.
Someone who makes disrespectful and ironic comments
but disguised as sly, witty and even funny remarks.
This qualifies Stewie Griffin as an all around cheeky bastard, not just in this one episode's skit.
Reference #1 definition:
"Cheeky is a word used by english people like myself. 1. it is a word used to describe someone who does something or says something sort of disrespectful and sometimes rude, but says it in a cunning way."
describes Stewie exactly
From Family Guy episode "PTV":
"cheeky bastard is filmed in front of a live studio audience"
Brian: "Oh my god, where's my roast pheasant?!!"
Stewie: "by now I think its in my lower intestine!"
HAHAHAHAHA! (retarded sounding version of Stewie's laughter)
Brian: "you ate it? but I told you my boss was coming here for dinner!"
Stewie: "well unless he likes pork rinds, he's going home hungry"