A word used as another word for stomps. Smacks means that one thing absolutely destroys another in a challenge or fight.
Person 1: Yo who would win a fight skips or muscle man when he was a bodybuilder.
Person 2: Nah skips absolutely smacks.
When somebody gets battered and embarrassed during a fight
Oh Katelyn’s a wee poof she got smacked about easy.
To complete a task to the full specification, without hesitation.
Casey : "we need to edit this video tonight" Dan: "Just smack it Bruew".
Similar to 'kill it', 'get it done', or 'clutch' - it's something you say when failure is not an option, and once you proclaim you're going to smack it, everyone knows you're not fucking around.
"I don't know if we can get this edit done on time Dan"
"Nah bro lets just smack it!"
or
"Are you sure about this?"
"Yeah for sure bro we'll just smack it"