1.A person of very high class and maintnence.
2.A person who is snobby.
1.That guy is really Sir William. Have you seen his Lamborghini?
2.He's so Sir William he turns his nose to everyone.
When one would fist-fuck a girl forearm deep, on Christmas, and leave her laying on her bed hemorrhaging. Thus, leaving the possibility of hospitalization up to her parents, who may have been in the next room over.
Shit, you really Sir Williamed that girl to death last night. She bled like a stuck pig.