The past tense of drinking too much alcohol, to the point of blacking out large portions of the night.
"I dunno how I got so loadered last night, but now I can't find my clothes!"
Loadered is the result of the combination of "lite beers" and a chipper or two (a chipper being the East Coast word for butting out a cigarette when it's around half smoked, and saving the rest for later).
Being loadered usually prevents one from watching their hockey highlights that they taped on the VCR, and makes it extremely dangerous to drive their Toyota pick-up truck at top speed on the highway. (Please refer to local laws regarding maximum blood alcohol levels.)
"Holy fuck boys, I'm tellin' ya! I gut reight loadered last night while watchin' the hockey highlights, then skeized on the couch boys."