a word originating in rural north texas, easily used in a good or bad/ male or female context.
1. smooth dackin from male to female could mean sexual activity among other things.
2. smooth dackin from male to male usually means doing wrong to them or screwing something up for them in one form or another.
3. just a random statement.
male to female: "hey baby, if you're lucky, i might just give you a smooth dackin."
male to male: "hey fucker, you do that shit one more time i'll give you a smooth dackin"
general statement: (while playing a game of poker, and just lost a big hand) "man, i got the smooth dackin right there!"