Extremely bad tipper. Tipping is uncustomary here in Italy - even when service is outstanding, tipping is something we totally do not think about (besides, places with an outstanding service usually pay their waiters quite a lot - up to 20 € / hour). We only tip pizza delivery boys. I've never been to the USA so far, but I think I'll likely try not to tip. Kind of feels like I'm offending the waiter by giving him "charity".