fratboy

Example:He enjoys the label of a party boy, as it gives him an excuse to not take things too seriously.

Definition:An enthusiastic and excessive partygoer, often associated with irresponsible behavior.

Example:The rodeo of college life keeps every fratboy on their toes, always ready for the next party or prank.

Definition:A synonym that can be used in a more exaggerated sense, often in a negative context, to describe a typical college male behavior, especially their partying.