Ok, so you've used your lemon or lime to clean the windscreen. What do you do with it next? Simple..... if you have any black plastic which somehow you've managed to get some polish onto and can't get it off................................
yup - rub it with the fleshy part and then the skin of your chosen lemon/lime and watch as the polish just dissolves away ;)
Make sure you wash it all off thoroughly though..... nasty acid type stuff and paint dinnae mix :o