tied a rope to my bmx then tied the other end to a friends ankle. he then hung onto a crossbar on a full sized goalpost then when the rope tightened he got yanked off and landed on his arse. it was quite funny at the time.
i used a wall as a brake.. yes a brake.. i was young and stupid (well younger and less stupid) and i borrowed a bike from a guy but the brakes didnt work, he asked me if I knew how to brake with my feet, I said yes... made the hard choice: the street or a wall. the rest is history
LMFAO I DID THE SAME THING. First time I took my brakes off on my BMX, I was cruising around and somehow had to hit the brakes, didn't have the reflex to stick my foot in the back wheel yet... smashed into a wall full tilt.
about 200 years ago when i was 12, i rode down a hill with my friend on the back. i would ride under a tree with a rope hanging out of it, my buddy would grab the grab the rope and send him flying up into the tree. the last time we ever tried this, the rope got hung up on my bike...my buddy got thrown off the back and i (still on the bike) went up into the tree and last thing i remember is sailing over the handlebars. i woke up on the ground with my dad looking down at me wondering where i got my stupidity from. i've had back problems ever since, go figure.
not as silly as others but i did a wheelie and lost my balance but still held on so when it flipped over i finally let go, i f*cked up my knee and the bike slid into a parked car