No, no, no...ring the doorbell, wait until you hear the person about to answer the door, then run and do a spectacular fake trip-n-fall in their yard. Mutter cusswords under your breath, start to get up and stumble, falling back to the ground.
The poor sucker at the door always has the most interestng expression on his/her face...
So I've heard, anyway.
Now, where have I heard this before...