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1.
What cyclists say by convention as they pass each other on the road, or occasionally as they ride near pedestrians. It is infinitely more cool than mounting a dorky little horn or bell on your handlebars and squeezing it at every opportunity. It may not be always be strictly necessary, but it is a little courtesy that will get you cred and make you look experienced.
<College student races to class and overtakes a pack of spandex cyclists, but remains silent.>

"On your left! On your leeeeeft!" You gotta let us know! Where are your manners?"

<sound of metal crunching and muffled screams. this guy will not have to say this for a while.>
by spinningtabletop January 30, 2009

Words related to on your left

bike cyclists manners road rude
 
2.
Shouted at peds, slow cyclists, skaters while passing on the their left side. Preventative against left turns.
Used while riding at speed on a bike path or streets. OnyourLeft!
by Poindexter (really) December 09, 2008