Something that is pleasing in a greatly amusing manner. Derives from the word fantastic, meaning fantasy-like, only to exist in dreams or the imagination, and the accronym ROFL, which stands for Rolling On the Floor Laughing.

When some little bitchboy is acting like a little tiny pee pee poo poo baby and messing up the group plans.

Rofltastic: something that is rofl funny.

Basically, roflcopter, except with "tastic" instead of "copter". the "tastic" doesn't really mean anything, but it has been translated before as an acronym for "tactical assault squad turtles in corporated." the "in corporated" is used in two seperate words, since "incorporated" would only be used for the "i"