The scrapbook page below cracks me up:
We were out for a walk after dinner a few weeks ago and Dave put Luke up his shoulders and immediately Luke started poking Dave in his eyes, ears, nose, etc., etc., etc. It was TOO funny. The best part was that the harder Dave tried to get Luke to stop, the more Luke kept "poking" :) ha!
NOTE: what is it actually called when you let your kid ride on your shoulders??? Is it a piggyback ride?!?!?! I couldn't think of it. ha!