Mix all the dough ingredients together in a bowl until a shaggy dough forms. Pour in the water gradually as you may not need the additional 1/8 cup - you just want it so the dough can be formed into a cohesive ball, not too wet. Cover and let rest for 30 mins.

Meanwhile, make the base sauce. Start by sautéing the onions and garlic in olive oil over medium heat, until soft. Turn the heat off and mix in the mayonnaise off stovetop.

Roll out the dough into a circle on a floured surface. Poke holes on the dough with a fork.

Assemble the pizza: spread the mayo sauce, and top with the shrimp, corn, and shredded cheese.

Bake at 425 for 13-15 mins. In the meantime, combine equal parts ketchup and mayo. Drizzle with the sauce and enjoy :)