Getting narred out refers to a stunt or event that was extremely gnarly and causes even the gnarliest of surfers, skaters, or snowboarders to be sketched out.
"Me and my bros were surfin it up when I saw this huge set comin outside. I got into the barrel for like 4 seconds and then got pitted and felt totally narred out."
To be extremely drunk and high at the same time. Usually ends up being a scenario where the individual said they would only have one drink, but ultimately succumb to the temptation and get absolutely ripped.