We were on a booze cruise in Boston for a college graduation party. My friend and I were on the top deck, and he told me he wanted to cum into Boston harbor (I offered a couple of other warmer places, but he said "later" for those) - he wanted to squirt his semen into the harbor. So -- I said "lets make your wish cum true"
We went over to the side rail, he stuck his sock out as far as he could through the rails, and I jerked him off into the harbor. Being that it was a cruise with a bunch of drunken college kids, we ended up having a few people as an audience, and then got some applause when his cum shot into the harbor. We made sure not to do it into the wind! LOL.