Here, at last, we can reveal the mystery of how to generate heat, using only a small orange. (Large oranges are generally only reserved for experts, unless you're feeling particularly adventurous.)

Step 1

Choose An Orange

Choose very carefully, if you are not sure which orange to choose, please ask a nearby salesman to assist you. Remember to tell him what kind of heat you want out of the orange, as different oranges produce different results. (Pictured is the Florida Hamlin orange, as you can tell by it's distinctive blue glow.)

Step 2

Using Buddhist Mantra meditation, concentrate hard on the orange, minding not to make it explode(If this does happen, remember to rinse any citric acid from your eyes.)

Step 3

Recommended Mantras

Who Wouldn't?
Orange
Harry
Pavlov
Gangplank

Step 4

Your orange should start to levitate, and spin slowly. Do not be afraid if it starts to glow at this point, it is normal. You should develop a warm, smug-bastard-esque feeling inside.