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:

Verb.

Derived from the term rofl.

Verb: to laugh, said in response to something funny.

Derived from the acronym "rofl" which litterally means "rolling on the floor laughing".

A rare but fun sexual favor in which one person sits on a waffle iron (on or off depending on preference) long enough to get waffle marks on their ass cheeks. After this anywhere from one to five guys beat off on the person's "waffle ass", making what looks like an ass waffle with jizz syrup. Hence, the roffle.

to roll on the floor laughing.

Definition: "Rolling on the floor laughing"

Origin: Roffle comes from the Internet word "ROFL"

A rare but fun sexual favor in which one person sits on a waffle iron (on or off depending on preference) long enough to get waffle marks on their ass cheeks. After this anywhere from one to five guys beat off on the person's "waffle ass", making what looks like an ass waffle with jizz syrup. Hence, the roffle.