You should test the GFCI electrical outlets (found in kitchens and bathrooms in modern homes) at least once a year to make sure they are working. To test the circuit, plug something into the outlet that has the "test" or "reset" and then push the button. Whatever you have plugged in should turn off. If it doesn't, that means there's a problem with your GFCI circuit and it's not working... which means it's no longer protecting you. Call an electrician and have them come fix the circuit.