From Wikipedia
"On March 17th, 2007, [the most highly recruited basketball player in the Nation, O.J.] Mayo led Huntington High School to its 3rd straight Class AAA basketball championship in the state of West Virginia with 103-61 rout of South Charleston. Mayo finished with a triple-double: 41 points, 10 rebounds, and 11 assists. In his final moments with a minute left in the game,
Mayo threw the ball off the backboard from the free-throw line, caught it in midair and dunked. He then threw the ball deep into the stands and held up three fingers and was promptly ejected."
The youtube.com clip of it is here (the first 40 seconds are all that matters). Look at that kid strut around the court after being T'd up. Stay classy, West Virginia.