They are maniacal about their obsession.
The dinner table is often the preferred arena for reciting lines from their favorite episodes.
This bizarre behavior has not escaped the notice of Jolly Ole Saint Nicholas.
And so, the ever omniscient observer in the red suit brought them this ingenious invention:
We had a ball setting up the "absorbent-and-yellow-and-porous is he, pineapple-under-the-sea" environment.
This is by far, one of my better finds for Christmas presents. The boys loved it. It was very inexpensive and came with everything, except the fish.
Of course it is a good thing I accounted for the "Lisa Factor" and purchased two of the aquatic coral critters because one of them decided to check out early....thankfully before the kind hearted Nicholas noticed. Oy.