(This might get a little inappropriate towards the end. I will attempt to keep things as vanilla as possible, but my apologies if any mods still consider it unsuitable.)
Let us begin...
Apropos of nothing I am running for my life, high above the sea on some sort of oil rig/scaffolding structure. It seems that I'm a member of the Scooby Doo gang and a terrifying ghoul is pursuing us. I am in place of Shaggy, incidentally. Anyway, we're running and running, then, horror! End of the line... We're at the edge of a great iron girder with nowhere to go but drop into the violent ocean below.
So, we all jump and hope for the best. Scooby and me land in some feeble rubber dinghy, whilst Fred, Daphne and Velma have the fortune of ending up on an enermous, luxury cruise ship. Scooby and I float along, enjoying the calm for a while. Then, all of a sudden, the dinghy morphs into some non-descript little car, and Scooby transforms into a very plain looking and ever-so-slightly overweight girl I went to college with. And we're kissing. Passionately. The car is driving itself (as we're both in the back seat), and making it's way through some winding mountain roads.
Seconds that feel like an eternity pass and the kissing just isn't enough anymore. The desire is overwhelming, and I take HER penis in my mouth and go to work. Oh my, look at me go, I'm fantastic. But wait, this feels odd, and strangely familiar - something isn't right but I can't put my finger on it. There's no time for such consideration though. My work is done. She climaxes, emptying hot ambrosia into my mouth. It's at this moment that I realise... I realise that her old chap is actually my old chap and the colour washes from my face. I'm distraught, appalled, confused, and my mouth is stuggling to contain her/my essence.
Then, a knock on the window. I spin around (furiously swiping at my chin) and there's a Mountie at the window. We've reached border control. He looks at me for a second, smiles, and waves us on. The magic car obliges and carries us off into the distance.
The End.