Definition #1: When a person is seated and needs to get up for any reason they would call fivesies and have their seat held for the duration of five minutes.
Definition #2: The age five.
Definition #2: The age five.
Example #1.Mel: "I need a drink fivesies on the chair."
Example #2.Jerry: "You act like you are fivesies."
Example #2.Jerry: "You act like you are fivesies."
by Baxter Wells June 20, 2006
An eighth grader. One who has five more years of school to go. Namely used at Boston Latin School, and the fivesies love to taunt and tease the sixies because they were teased as sixies. GO WOLFPACK!!!!!!!
Fivesie: Hey did you know you gotta chose a second language in eighth grade?
Sixie: NOOOOOOOO! I'm already failing English and Latin!!!!!!!!
Sixie: NOOOOOOOO! I'm already failing English and Latin!!!!!!!!
by ebkf May 1, 2005