Methods:

1. Make a cup of Hot Chocolate
2. Get two spoons, put them in your hot chocolate to warm up to remove the variable of heat transferring into the spoon.
3. Take one spoon out, fill it up, blow on it for a few seconds, then put it in your mouth.
4. Take the second one out, leave it out for the same amount of time you would have if you had blown on it, then put it in your mouth.

Report on temperature difference. If you had an instant-read thermometer you could even be more certain of the results.