Don’t look down on those below or above average height. The former are likely to be heroic hobbits or dwarves and the latter ogres or giants. To get the wrong side of a dwarf means trouble (they are excellent with an axe for good reason, they needed to get a ferocious reputation to stop themselves from being wiped out by those who think anyone under four foot tall is a push over – they succeeded).
Always buy food, especially fruit, from a reputable market/greengrocer and not some little old lady who happens to be passing by and seems keen to get rid of a particularly large/red/shiny (or any combination of these) apple. There's no telling what she's added to it and keenness to get rid of something should act as a warning. You've got to ask yourself why!