Roll on f*king floor laughing

It is a typo for ROFL. This is used when you are giving the expression, ROFL but much greater.

Rolling On the Floor fucking Loudly.

To be used between parties who are each aware of the meaning. In the case that someone sees you using it, you may claim its a typo on wordROFL/word.

Roll On Fucking Floor Laughing. ROFL but with sarcasm or those with Tourette's

This word originated from the abreviation :
ROFL = Roll On Floor Laughing.
Which is a term widely used in internet chatrooms and instant messaging software.
Roffle evolved due to people readling ROFL like a normal word rather than spelling out each letter as R. O. F. L.

Roffle is therefore the casual friendly way to say ROFL and can be used as a verb in its own right:

what l33t hax0rs eat for breakfast.

laughing, like lol
its the extended form of
rofl

Verb.

Derived from the term rofl.