A chemist Shop

Young lad gets a job in a chemist shop. A lady comes in and asks for a box of tampons. The lad being really shy runs into the back of the shop and asks one of the female assistants to serve the lady. The female assistant returns to the lad and tells him "this is the sort of thing you will have to get used to if you want to continue working here." The next month the same lady comes into the shop and asks "can I have a box of tampons please". The young lad overcomes his shyness and serves the lady. This goes on and after a few months the lad becomes more confident. One month the lady comes in, this time she asks for a packet of cotton wool. The young lad rather surprised at this request quick replies "have you started rolling your own?"