it's basically the already bastardized word "rofl" (Rolling On Floor Laughing) totally slaughtered into Roffles Waffles which means the same thing but doesnt really make sense. Just more fun to say I suppose.
In Americas Army it is the RPG-7. It just blows up anything it hits or in the general area. It is also called the "ROE Cannon" because it has a tendance to TK. If you stand behind the person shooting you will die and the explosion radius is so high that it will probably get teammates.
Player was blown up by DysfunctionalFORCE's rocket
DysfunctionalFORCE attacked teammate Player1
DysfunctionalFORCE attacked teammate Player2
Player 2: Wtf n00b cannon.