"Fried shrimps and crabs" is an idiom that describes swearing. It is explained from two aspects: the ingredient list and the production steps. It can be understood as:

1. Ingredients list: this The "shrimp" and "crab" in the idiom are seafood and are the raw materials for making a delicious dish. "Sauteing" and "dismantling" represent the cooking and decomposition steps in the production process. In this idiom, "fried shrimp" means frying the shrimp in oil in a pot, and "disassembling crab" means removing the crab shell and breaking the crab meat into small pieces.

2. Production steps: First, clean and process the shrimp and crab, peel the shrimp and break the crab into small pieces. Then, pour an appropriate amount of oil into the pot, add the shrimps and stir-fry until they change color, add the crab pieces and continue to stir-fry. Then, add seasonings, such as cooking wine, salt, MSG, etc., and continue to stir-fry until cooked through. Finally, add the starch to water to boil, pour it into the pot to thicken it, and stir-fry until the soup thickens.

The "fried shrimps and crabs" in this idiom has no actual derogatory connotation. It is mainly used to describe a person's vulgar words and sharp language, which is similar to using fierce words to attack and criticize. This style of language may make people feel uncomfortable or hurtful, so we should try to avoid using vulgar language in our daily lives, especially in formal situations or when communicating with strangers.