Coat your shrimp in olive oil and all the seasonings listed.
Heat a large skillet on medium high and cook your shrimp until opaque - about 2 minutes per side.
Avocado Mash:
Combine all ingredients and taste to adjust anything.
Spicy Mayo:
Whisk ingredients together. Taste and adjust if needed.
Assembly:
Wash and dry your cucumbers well. Slice them in half and then again those halves in half. Using a spoon or grapefruit spoon, scoop out as much of the seeds and flesh as possible.
First spread in about 1 tablespoon of the avocado mash into each cucumber boat. Then add the rice and spread out. Top with three shrimp, drizzle with spicy mayo and sprinkle with sesame seeds.