Funny customer

I am quite relaxed today as there are not much work to be done. There's one particular customer that totally completed my day :D He told me that he wanted to convert his year1979 C-Class (I believe it is W123) to the latest model of Mercedes-Benz C-Class (W204). It took me a very long time to convince him that it is not possible; and the hardest part is that I have to hold my laughter while talking to him as I don't want to make him looks like an idiot( although he is xD~)