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The best competitive swimming stroke that exists. In 50 Meter Butterfly a swimmer swims the butterfly stroke for 50 meters (One lap/Two lengths short course, or One length long course).
Swimmer 1: Guess what!? Coach says i get to swim 50 Meter Butterfly at the next meet!

Swimmer 2: Whoa awesome! You're so lucky! I have to swim the 500! yuck!
by dontyouwishyoucouldswimlikeme February 04, 2010