Scottish way of saying, âyou get drunk off of one can/glass/bottle...etcâ or âYouâre a lightweightâ. So, if you happen to be a âwan can danâ, prepare to be slagged off. lol. I actually happen to be one, so youâre not alone.
âHaha! Youâve only had one can of that dragon soop n yer awready oot yer nut. Youâre a pure *wan can dan*.â