(verb) To take a slightly unattractive girl to a sleazy pizza place after drinking heavily, not order any pizza, but instead make out with the girl in the corner while shitty music plays and the counter-attendants look on unhappily. One who jumbo slices will not take the girl home after.
The HUGE display screen typically found at sporting events. It shows game/player stats, scores, replays, advertisements, etc to the crowd.
Jumbotron is actually a Sony trademark name, but the word is used to refer generically to any gigantastic LED screens like it.
At a basketball court, the jumbotron might be about 11 feet wide, but in a football stadium, it'll probably be more like 33 feet.