1. Behavior characterized by overindulgent drinking on one's birthday, often by forcing one's friends to do shots with with oneself, failing to take into account that no one did as many shots as he/she did.
2. Reckless attitude towards special events planned by one's friends and family, e.g., getting drunk the night before friends want to take you to basketball games and concerts.
3. Looking one's best while greeting a friend's parent.
Julian's pukulous nature on Christmas Eve threatened his family's tradition of opening gifts on Christmas morning.