full on 

Adj, holding nothing back. intense, relentless.

no way mate, that was so full on its doing my head in.

full on by herbie August 25, 2004

full on 

An adjective expressing anything to the extreme.

Full on hungry. Full on pissed.

full on by Jess Face September 21, 2005

full on 

The absolute whole amount of something, maximum quantity or intensity, such as turning a tap on full, it is all go, all happening and 'full on'.

Rents: " How is University?"
You: " It is full on, I have 2 assignments due tomorrow and a 4 hour lab this evening, exams next week, a cold coming on, no money, no food in the house and everything is just FULL ON!"
(oh yes and I forgot to mention my hot date later tonight~ I got the cold, and the cold sore off them as well;)

full on by Intensity May 27, 2006

full on 

having a strong or wild personality, audacious

Tawny is making out with some random dude and shouting at the boat captain to be a man and speed up. That girl is so full on.

full on by Carlo R. April 3, 2008

Full On 

Nathan Fillion uses the phrase Full On. Its short form is: FO. It is often used in conjunction with phrases such as: Double Rainbow, Double Rainbow, All The Way, and Double Rainbow, All The Way Across The Sky.

It means that which is:

•fully ecstatically wondrous

•beyond joyfully amazing

•intensely orgasmically blissful

Here are some usage examples for Full On. (For more examples, see the Twitter page belonging to NathanFillion:)

Nathan Fillion, on his Twitter page, kindly acknowledged my entry work defining his recommendation of the new "in" phrase: "Double Rainbow" on Urban Dictionary! He said it is "Full on." Thank you, Nathan. You are so Full On Double Rainbow, All The Way Across The Sky! (FO DR ATW ATS!) (See also: FODRATWATS)

The TV shows Castle and Firefly are so intense, they are Full On Double Rainbow!.

Serenity, the feature film starring Nathan Fillion, is so vivid, it's Full On Double Rainbow!

Nathan Fillion is so awesomely spectacular, sexyhotmessgorgeous, and brilliantly talented, his fame is sweeping across the nation, and over all the world! Nathan Fillion is Full On Double Rainbow, All The Way Across The Sky!

Full On by Kcat10 August 2, 2010

Full on 

A complete retard or to do something retarded

"Did you see how much of a curly headed fuck levi is?"

"Yea hes pretty full on"

Full on by T_WKN_2010 October 10, 2009

Full On 

n.
British slang term for a woman being on her period.

Get me some bloody chocolate, I'm full-on this week!

Full On by Wendy Lane 3/4 November 18, 2004