A threesome.
Me: my girlfriend offered to do a triathlon tonight: me, her, and her twin that I never met before!
Friend: awesome dude, no worries her brother is such a nice guy!
Friend: awesome dude, no worries her brother is such a nice guy!
by gcal September 10, 2018

a 3-part endorphin boosting activity which involves running, swimming and general merrymaking (see related: libations, burgers, karaoke, dance-offs).
'Dude, I did the Hippie Triathlon yesterday. My endorphins were buzzzzzzzzin'
Person 1: 'Did you hear about the Hippie Triathlon?'
Person 2: That Outdoor Voices event?
Person 1: Yea, it's, like, the chillest way to get your endorphin rush.
Person 1: 'Did you hear about the Hippie Triathlon?'
Person 2: That Outdoor Voices event?
Person 1: Yea, it's, like, the chillest way to get your endorphin rush.
by Mcg_McG_McG_McG November 2, 2018

An endurance sport similar to the Olympic Triathlon, however, instead of running, biking, and swimming, the disciplines competed in are Stock Car Racing (ie NASCAR,) Hot Dog Eating, and throwing (American) footballs through toilet seats.
by Musty Musk Man March 30, 2025

When you Fill a CamelBak with Miller Lite, take a Bump of Booger Sugar in Asbury Park, run south down the boardwalk, take a dump in Belmar, and arrive in Beach Haven slam three Jäger-bombs, rent a jet ski and cruise down to Ocean City. Chug 3 local IPA’s of your choice and commandeer a Sightseer Tram. Puke and Rally in Any Wildwood. Arrive in Cape May all before you listen to the entire Album “Born in the U.S.A.” By Bruce Springsteen and finish your CamelBak.
Me the gents were listening to “The Boys Are Back in Town” and just decided to go crush a Jersey Triathlon. Woke up with jet ski keys in my pocket, not sure where the ski is.
by Michael Delvechio July 30, 2022
