roflrifl 

Like a ROFLCOPTER or LOLLERSKATES.
A roflrifl is basically a rifle that shoots the phrase ROFL, but like the leettrain.

Bitch, imma pwn j00 wit my roflrifl!

roflrifl by SOME BASTARD THAT EATS FOOD April 16, 2006

Roflriffic 

A term used to replace 'rofl' when looking for a more fun thing to say.

Do you watch Equals Three?
No, why?
Dude, it's roflriffic!

Roflriffic by Dr. Obteuss April 4, 2011