Say "please"!

Dominik went out in the front yard to play the other day and wanted me to open the garage (where the toys and the trikes are).  The way he asks is by pointing and babbling.  I asked him to say "please."  He didn't want to (he does know how to sign "please".)  It was obvious that he knew what I wanted, and after a while it got to be comical...and then Konrad opened the garage door and all was better.