A word directed towards someone that you feel threatened by that you want to make feel inferior to yourself. The person being called this is usually stronger and smarter than the one doing the name calling.
"That guy charles down the hall, he's a little bastard that's always fucking with someone!", said George.
Person 1: you look pretty
Person 2: aw you look pretty too. PRETTY ANNOYING
person 1: you cheeky little bastard
Mom: do this dishes
Me: no
Mom: stop being a cheeky little bastard and do the fucking dishes before I cut you
Caesar Flickerman: don't make me promise you I won't cry
Katniss: you know I wouldn't believe you even if you did
Caesar: the girl on fire is cheeky!! a cheeky little bastard