Go get me another beer, you little fucklet.
If that same child scratched his father's Pontiac Firebird.
You scratched my Firebird - I'm going to kill you, you little bastard fucklet.
or, it could be used as defined
Johnny's mama was picked up at a bar and, they screwed so hard the condom broke. Looks like Johnny is a little fucklet.
......later that day:
Fuckress: Oh yeah, baby, lets make some more fucklets.
......later that year:
Fucker: You three fucklets play together...etc.