This may be the coolest jack-o-lantern I have seen so far this year. It comes from Imgur user Mikepants, who carved it like a normal Halloween pumpkin with a super creepy grin and eyes. He then used chemistry to take things a step further using fire.
Beavis and Butthead would be so proud. The green flames and are made using boric acid and some gas line antifreeze and water remover. About.com provided all the details on how to make your own green flame.
Keep in mind that since this is a real fire, your pumpkin will die and you may too if you light it in your home, so you’ve been warned.