"HOW SEX IS LIKE A ROLLER COASTER" joke

You get on with your partner.
There is anxious anticipation as you start.
You start slowly, climbing your way to the top.
There are smiles exchanged, and giggles, maybe even hand holding.
The excitement builds and builds.
It nears the top.
The expressions on the faces become wonderous and excited.
Then as it hits the pinacle, things move very fast.
There/'s a quick motion, the heart races with complete excitement, faces are all in total pleasure.
Arms are flailing, heads are bouncing, and there is some noticeable screeming going on.
The rest of the ride is up and down., twisting and turning, lots of bumping, sometimes in the light, sometimes in the dark. Sometimes there is a surprise and sometimes it becomes all too familiar but always, always at the end, there is a big smile on the face. Hair is all messed up, and everyone is talking about how great it is, while some of them will say,? " I wanna go again"