victory-lapper
n.—Gloss: a high school student who takes more than four years to graduate. Note: A similar term at the college level is super senior. «As a fifth-year student at Mother Teresa, Matt Rossoni is what’s known as a “victory-lapper.”» —“Spartans hope to make a mark” by Steve Green London Free Press (Canada) Oct. 31, 2007. (source: Double-Tongued Dictionary)