Trevor says he'll have so many backrubs that it will be like Burke Williams. Burke Williams is a day spa chain in California.
Norvegr is Old Norse meaning the "North Way", literally the route north, along the coast of what is now Norway. It is the root of the word Norway.
"Whippets" is a slang term for recreationally used nitrous oxide.
BabyBjörn is a brand of infant carriers, bouncers, etc.