Flashy, flamboyant behavior which can result from winning big in Las Vegas, often accompanied by several 'hanger's on', a sprinkling of jealous friends and very friendly open arms from all casino management.
"Chris, just take a look at Kristen pulling up in her stretch."
"Yeah, I swear she's had Vegasitis ever since winning the megadosh jackpot at The Conceitio Casino last year!"
"Did you hear the bad news about Sarah?"
"Yeah, I heard She got dealt The Ace sharing needles in the 'dam (Amsterdam). It's horrible!"
NOTE: -'Sharing needles' refers to the act of sharing a hypodermic needle containing heroin (or a number of other recreational drugs that can be taken this way). Often the second users 'half' will contain traces of blood. This is arguably the easiest way to transmit AIDS or HIV.