A guide to

How to be:
Less gross: There is nothing worse than finding something awkward in your food. Unless it's making a big deal out of finding a strand of hair in your mixed salad. Be courteous and discreetly point it out to your server.
Nicer: Throw away the lint in the dryer when you get done drying clothes. This way a stranger doesn't have to worry about why you have so much red fuzz.
Better than your ex's: Even when you're 20, it is never good form to ask a lady her age. Unless she has braces and is in the check out line buying Smirnoff, leave the questions for her disclosure.