We got pretty shit faced one night and dug a 5 foot deep pit in the sand complete with steps out, surrounded it with a huge retainer wall lined with castle tower things, then dug a moat around that, and then a smaller wall and a little 'outpost' tower that was an ever-growing stack of beer cans as the tide came in. Took quite some time for the ocean to destroy our fortress and damn were we fucked up when it finally won!
