ridicadonkulus
Adj. Identical to ridonkulus but with an intensifying prefix "ridica." Expresses the greatest possible silliness. Linguistic physicists have determined that a more intense form of "ridiculous" would topple under its own ridonkuusness and would, therefore, not be possible.
I don't know where you heard they are making a sequel to "300" called "301," starring Brian Peppers. That's ridicadonkulus!