a bicycle with only one rear cog or "gear" which is fixed directly onto the hub of the wheel. This style of bicycle preceeded the more modern freewheel single speed which allowed the rider to stop pedaling whilst coasting. Still more modern yet, is the multi-speed freewheel or freehub design which is just an expansion upon the single speed freewheel.
Is said to be it's own "Sub-culture" but according to a hipster, everything they like is a sub-culture, and everything else is mainstream garbage.
Since it has no brakes, it has no business being on the actual road, and is usually used to ride around the neighborhood to make the user's hipster status higher than all the neighborhood kids.
Pretty soon, every single hipster douche/wannabe is gonna be riding this and believe it's so "indie."
Kid- "better than your fixie faggot bike, i can actual go on the dirt with this bike."
non hipster: yeah.
hipster: i got the hookup on some nice 700's if youre interested.
non hipster: fuck off.