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1.
n. A serious nuisance on Sound Transit's Sounder Commuter Rail.
I was supposed to get off of the Sounder train in Puyallup, but there was a bicyclist in my way.
by Camp Lickalotta August 25, 2009
 
2.
Similar in etymology to bi-curious, a bi-cyclist is someone who goes through bi-sexual periods in his / her sexual career.
Don't spin your wheels over Susie - she's a bi-cyclist and will be back to boys by next week.
by LailaMay March 05, 2010
 
3.
Code term for bisexual.
"Damn she's hot. I'd love to go out with her."

"Like or dislike, she's a bicyclist man."
by Sex ED July 28, 2006