urbandictionary.com is my new toy...

here are some definitons of "new cool" words:

TUBULAR: used mostly in the 80's, or by people mocking the 80's to describe something 'awesome' or 'excelent' ie, good.
teenage mutant ninja turtles say -'that's totally tubular dudette'

RAD: An abbreviation of 'radical'--a term made popular by the Teenage Mutant Ninja Turtles. Still primarily used by people on the West Coast who find words like 'cool', 'awesome', and 'tight' to be tired and overused; 'rad' is generally considered to be a much higher praise than the aforementioned superlatives. Also used as a general expression of awe.
"Those are some rad shoes."
"Oh, RAD."

RIGHTEOUS: Containing the best possible attributable qualities.
Oh, man, that lasagna was righteous!

MONDO: A word that may be used as either an adjective or a noun.As an adjective:Used to describe a person or thing that is extremely flamboyant in nature.As a noun:A person that has very feminine qualities. May also be used to describe a variety of squeeze drinks.Variations:mondoness, mondolicious
adj."That kilt is so mondo!"
nounPerson: "You're such a mondo!"
Drink: "Let me take a sip of that mondo

SWEET: Something that is awesome
That was so sweet what you just