shit i remeber that stuff from my teenage years. i would set shit on fire with it just to see the gnar ass blue flame, then take some shots.
i like trickys watermelon idea, but instead just try boring a hole into the melon, pour that strong assed shit inside, and cork the hole with the plug you carved out.
let it sit for a bit, then slice it up and eat.
my mom tought me this when i was 15 or so. gatta love parents