An informal and semi jocular way of sayinging the word “Deal” while removing the implied cutting harshness and seriousness of the phrase it is part of, also applying some levity to what otherwise may be perceived by the interlocutor as an overly aggressive, patronizing, Or inappropriately serious command or question.
For example “what’s the deal with the money I loaned you for lunch yesterday” could come across as petty, whereas “I bought you lunch yesterday, are you buying? what’s the dealio?” Would lend a light touch too an otherwise awkward conversation.
Are we going halfsies on a boat or not… What’s the dealio?
What's the deal? Wuzzup? What it is? What it will be? What's gonon?, What's REALLY gonon? Wuzapnin? What's this all about? What's the time? What's next? Who's next?
But with a little flair. Can be:
1) a little more intimidating, as in toying with someone. (Tell me the truth.) Or,
2) just trying to sound cool (sometimes sounds FOOL or like a prick).
1) DX: "So tell me Regina. You sez you at home all night; but, my boyz seen you riding the Avenues in a black Beamah! Now ... WHAT'S THE DEALIO?!"
2) COOLIO FOOLIO: "WHAT'S THE DEALIO, Emilio? Sound like a shoddy old audio. Maybe we oughta BURY yo' stereo!"
Dumpleton dealing is the skilled art of having the dexterity, skill and experience of dealing a game of poker where the dealer is able to manipulate the cards at the last minute or last round of betting in order that a player who was odds on favourite to win ends up losing to a very unlikely turn of fate. Many dumpleton dealers are also magicians and can adapt there skills easily to close up magic or street cons such as 3 card monte.
Ian had a Full House Aces over Kings, he could only lose to one card, middle pin nine of hearts to give the other guy a straight flush, Sarah was dealing and last card she turned the nine of hearts!! She was dumpleton dealing for sure!!