only because someone mentioned watermelons earlier...
Next time you can, buy a watermelon big enough for a few people to dig in on but not so big that it won't fit in your fridge.
Also, buy some Rum... either plain or some sweet flavor (not spiced).
Cut a bottle-top size hole out of part of the watermelon... if you can, cut out a plug that you can replace.
Open your bottle of rum and stick it in the hole, the adjust everything so the rum bottle is upside down. Watch the bottle drain into the melon.
Take the bottle out, plug the hole, and maybe even tape it down if it helps.
Leave it in the fridge for 24 hours... halfway or every 1/4 of the 24 hours, rotate the melon a little so the booze saturated is properly.
Feast.