A act of the most horrifying sort. The bike rider is placed anus first upon a seatless bike's seat post until it is fully inside them. They are then pushed down a very steep (and preferably Rocky) hill.
Bimmy: Dude Jimmy's in the hospital!
Wimmy: Oh no why?
Bimmy: Someone gave him a Brazilian Bike Ride
Wimmy: Oh no!
Wimmy: Oh no why?
Bimmy: Someone gave him a Brazilian Bike Ride
Wimmy: Oh no!
by UNCLEbrotherCousin January 20, 2020

by Biker girl October 25, 2015

by Race ready cycle September 15, 2020

by GoodOldMeth September 11, 2015

When someone is on a bicycle he doesn't have to follow the laws of traffic, until he gets into an accident. From the second before the collision until the second after he becomes a vehicle and suddenly all laws of traffic apply to him. This phenomenon is up until the time of writing only been observed when the cyclist isn't breaking any laws as a vehicle.
person in car: "Hey dude why did you drive so recklessly?"
person on bike: "It's okay because I wasn't a vehicle until you hit me, so you are the bad driver."
person in car: "Ah I see, the quantum bike phenomenon. I was clearly wrong here, sorry for the inconvenience."
person on bike: "It's okay because I wasn't a vehicle until you hit me, so you are the bad driver."
person in car: "Ah I see, the quantum bike phenomenon. I was clearly wrong here, sorry for the inconvenience."
by ThatGreenGuy8 November 14, 2020

A principle invoked when urging someone to persevere despite initial failure, which fully stated is: "You don't need me to remind you, when things don't go well the first time, try again." So named because it is drawn from two familiar premises: (a) persevering is like riding a bike, you never forget how, and (b) when you fall off a horse, you get right back on and give it another go.
My nephew just failed the bar a second time and was ready to hang it up, but I reminded him of the Bike/Horse Rule and told him to sign up for the thing again, he'll get it.
by FitofPeak2 February 17, 2022

by TheTrumpet June 1, 2018
