Don't tell stories of a doubtful character.
Don't interrupt; don't contradict; don't be quarrelsome.
Don't spin long yarns, even when asked to; avoid "chestnuts."
Don't be inattentive when other people are talking.
Don't be noisy, either as a winner or as a loser.
Don't read a book or even a newspaper in company.
Don't keep looking at your watch, as if bored.
Don't pretend to go and then stay; avoid prolonged good-byes.
Don't stay too long anywhere.