Because he always came in a little behind.
Apparently "Only to stop myself from coming too quickly" wasn't the right answer.
We came we saw we conjured!
All the ones who can run/swim/jump already made it to America.
Everything gets recycled.
Because every time he puts up a prayer it gets answered. (I thought of this myself, but it is so corny, it could easily be in every damn joke book.)
Because he doesn't like looking down on the unemployed. First to ever post this joke here, yay!
Walking.
Having two legs