saltwater enema...

...so the new SERFTAC model is actually self-propelled and catches the wave for you. Unfortunately it has an eject button too, which is activated by entering Poo stance, resulting in the saltwater enema treatment. The timeless airbrush hides the fact that the design is over 5 years old. It's a good thing surfboards haven't progressed since then or else this board would be out-of-date...