Eating at Your Friends' Homes!
It's very important not to piss off your friends. Because: if you don't make them mad, they might invite you over to eat! Now, when you eat at your friends' homes, your little rules about "this or that is off limits" should go where? That's right, out the window or up your undsoweiter. Because following these little rules might what? That's right, piss off your friends. And that brings us right back to the beginning where we did not want to be, damn it. I don't know how to blaaaaag!
Anyway, dinner at your friend's house is the one time when rules like "no supermarket chocolate," and "I do not drink of the orange juice: I only touch virgin citrus with unbroached, blushing peel" are not to be followed unless it's some outlandish kind of crazy situation like your friend tries to get you to drink Crystal Lite or however you spell that crap. MAN that stuff is nasty, OH my god don't drink it. Accept it with huge smiles and glad cries and then pour it in a houseplant at the first op.
Remember: at friends' houses YOU LOVE EVERYTHING!