I know someone who can

I know someone who can ... Knee board around a lake
I know someone who can... Surf big wave
I know someone who can ... flip into the water   
I know someone who can... swim 6 lengths without standing up
I know someone who can... play darts
I know someone who can... shuffle backwards
I know someone who can... stand up on a taboggin.
I know someone who can... climb cliffs
I know someone who can... bike around Sumner
And that someone is ME