I did this for Illustration Friday, the theme was "Citrus". It's a bit of a rush-job in my sketchbook but I figured I'd post it anyway. I coloured it in Photoshop
There are an awful lot of really fresh looking lemons & limes already submitted, fantastic looking ones mind you, but for me they're not the first thing that comes to mind. What I think of, is myself and my cousin daring each other to bite lemon slices when we were wee.