No worries - You're welcome / It's OK / Don't worry about it. (picked up from rugby players from Australia and New Zealand)
Get p-ssed - get sloppy drunk
Also picked up other phrases from the guys, but I'm not really sure just how derogatory or offensive they are, so.... moving past the rugby influence...
Lower 48 - Alaskan for the continuous 48 States
Travel/go outside - leave Alaska
Cool beans - that's cool
Aaaaah (said in a sing song tone by kids over a particularly cool toy, accomplishment, etc.) - very cool thing, envision light from Heaven shining on said object.