The answer to 'sink burst pipe' is that a burst pipe under the sink is a common plumbing issue that can be caused by a variety of factors, including age, corrosion, freezing temperatures, or physical damage. Symptoms may include water leaking from the sink, low water pressure, or the sink not draining properly.
In many cases, a burst pipe under the sink can be repaired by a DIY homeowner, but it's important to take safety precautions and have the right tools and materials on hand. If the pipe is severely damaged or the leak is difficult to access, it's best to call a professional plumber to assess the issue and make the necessary repairs.