1. Bring a large pot of heavily salted water to boil and add the shrimp.
2. Bring to a boil again and cook for 3 minutes.
3. Drain the shrimp and rinse to stop the cooking.
4. Peel as soon as the shrimp are cool enough to handle.
5. Mince the onion, garlic, and jalapenos, chop the cilantro and add to the olive oil in a large bowl.
6. Squeeze the limes and add to the bowl along with the shrimp and sugar, salt and pepper.
7. Cover and refrigerate for a few hours.
8. Serve with toothpicks and plenty of napkins.