An American, English speaking friend was told to order food in Chinese while we were there and ended up making the whole restaurant laugh when he very loudly let her know he was sterile. According to our hosts haha.
I heard a story of an American student in Beijing asking for "paigu mien" (pork rib noodles), but he rather confused the waitress by asking for "pigu mien", bottom (arse) noodles!