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1.
The act of physically attacking another individual.
That guy has some anger management issues, yesterday I saw him lay the smackdown on his beeatch for talking back.
by Tsunamisurfer June 09, 2005

Words related to lay the smackdown

boot in face flying kick kick in head monk boot stomp
 
2.
To take control of a situation with the intention of resolving it as rapidly as possible
I am gonna go in there and lay the smack down
by KaffyP February 02, 2010