Yes, a toaster in the bathtub can be extremely dangerous and potentially lethal. Mixing water and electricity is a serious safety hazard because water is a good conductor of electricity. When a toaster or any electrical appliance comes into contact with water, it can cause a short circuit, leading to electric current flowing through the water. If a person is in the water at the time, they can become the path of least resistance for the electricity, resulting in electric shock.
Electric shock can cause various injuries, ranging from mild discomfort to severe burns, muscle contractions, and even cardiac arrest. Depending on the severity of the shock and the individual's overall health, it can be fatal.
For this reason, it's crucial to follow safety guidelines when using electrical appliances and to never use them near water or in wet conditions, especially in a bathtub. It's important to keep electrical devices away from water sources and use ground fault circuit interrupters (GFCIs) in areas where water and electricity are likely to come into contact to reduce the risk of electric shock accidents.