Top Definition
Right before coming in a girl's mouth during oral sex, the man would take it out, "knight her" (touch one shoulder, than the other, with his penis, like a knight in the middle ages), come in her face and smack her across the face with his penis.
Last night, Jenny was being a bitch, so I gave her a Sir Smithington.
by golgathontheflatulent January 23, 2011

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