Seat at a poker table from which statistically unlikely bets/calls succeed at an unlikely rate. See also: Jammy Get, Spawny Bastard.
Suggestive or indicative of unnatural luck: a wan seat.
Player1: "You just called my trip aces with an inside straight draw with one card to come and completedyour straight on the river to knock me out and win £1000."
Player2: "Why of course. I am sat in the Wan Seat. What else did you expect to happen?"
Scottish way of saying, “you get drunk off of one can/glass/bottle...etc” or “You’re a lightweight”. So, if you happen to be a ‘wan can dan’, prepare to be slagged off. lol. I actually happen to be one, so you’re not alone.
“Haha! You’ve only had one can of that dragon soop n yer awready oot yer nut. You’re a pure *wan can dan*.”