No, you should not wash an electric toaster with water. Electric toasters are electrical appliances, and exposing them to water can be extremely dangerous. Water is a good conductor of electricity, and if it comes into contact with the electrical components inside the toaster, it can cause short circuits, electric shocks, and potentially even lead to fires.
If your toaster needs cleaning, make sure it is unplugged and cooled down before attempting to clean it. You can usually clean the exterior of the toaster with a damp cloth, but be careful not to let any water enter the openings or vents.
For cleaning the interior, many toasters have a removable crumb tray that can be taken out and washed separately. Some toasters also have a slide-out tray at the bottom that collects crumbs, and you can clean this tray as well. Refer to the toaster's user manual for specific cleaning instructions.
Remember, safety should always come first when dealing with electrical appliances, so avoid exposing them to water or other liquids.