when three sexual instances are performed.
we participated in a triathlon when she blew me, gave me and hand job, and then we had sex
by meegle time. November 08, 2009
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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!
by gcal September 10, 2018
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A sport where human failures compete.
If you are not good enough at running, cycling or swimming why not just put them together to make a sport for rejects.
Oh you like underaged children, then you mist be a triathlonist right?

My dad left me after coming out as a triathlonist!
by #CancelTriathlon May 22, 2021
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