Michael Phelps Underbite Olympian
Olympian Michael Phelps wore his underbite with pride at three different Olympic games as the United States' flagship underbite. Phelps also once latched his underbite onto a bong and filled his mighty lungs with ganja smoke before exhaling and hotboxing the entire neighborhood. His cereal sponsorship with Frosted Flakes got canned as a result but stoners rallied behind Michael Phelps and even petitioned to make him the new Captain Crunch.
Fun Fact: Throughout his swimming career Michael Phelps never failed a steroid test but he did test positive for being part dolphin.