No...you say excuse me when people are around so they can excuse you for your bad manners. When you are alone, burp your bunda of cause no one is there to be disgusted por your disgustingness :3
When people are around then yes... but when I'm alone I never use my mannners. But when its near the end of the ano and I'm sitting near the natal árvore then yes cause I wanna get stuff from santa... XXD