Step 1: Method 1: Straight out
Okay, maybe not the best solution, as it will inevitably end up with crying, shouting, tantrums, a sudden urge for chocolate--er..maybe that's just me. But if it's been long enough, maybe little Bobby will just take it with stride. Reassure Bobby that he is still, in fact, going to receive presents. Once his short attention span takes him back to the television, you are free to sigh with relief.
Step 2: Method 2: The Round-about Way
Step 3: Method 3: Use Santa
(Okay, so obviously the letters in the pictures don't say what you should write on them. But look! They're signed by Santa!)