A contraction of "slacker/slacking" and "retard". See also fucktard. Someone who is both lazy and mentally challenged.
My husband's slacktard friend is on our couch for the third straight day trying to beat Halo instead of going to his job.
by saska April 03, 2005
1 more definition
a lazy person who doesn't know how stupid they are
Dude, quit being a slacktard, you always comment ‘OMFG!! that shit is cray! can't believe that's real’ anytime someone shares an Onion article on Facebook, you’re an idiot.
by deepvmusicsucks November 08, 2014