A term used for being intoxicated or drunk. Possible etymology: The common urban tmesis of "izz" inserted into the word "slurred.". Whereas "slurred" would be the indication of being drunk and slurring ones speech. Sl-izz-urred or Sl-izz-ard.
Poppin bottles in the ice, like a blizzard
When we drink, we do it right, gettin' slizzard