The Official Bumperboats Tournament is something I hosted as a baby helper when we build this big ice arena in my town.
Ocean Cake (Duck Feet) is from when sea pickles were a brand new thing. We spammed them literally everywhere and giggled in an incredibly mature way at the squelch noise they made (hence duck feet).
Viaversion also substitutes, of all things, cake for sea pickles if you’re in the wrong version which was always very amusing when people joined and teleported to a coral biome. The water was full of coloured wool and cake.
I have a great screenshot somewhere of baby @Fumaz being very confused by his inedible cake, and wishing to share it with all his friends.