True Story:
A guy comes into the shop with an expensive off-set flip-flop hub.
Mounted on the hub is an El-Cheapo brand stamped cog.
Someone convinces him to remove the cog ASAP and spend the $20 to get a good one.
He removes the cog, flips the wheel to the SS side and donates the cog to the co-op.
The next day some hipster comes in, finds the cog and mounts it on the newly dished suicide wheel of his bum bike.
Fifteen seconds into the inagural ride the hipster is back walking kind of funny and looking all weepy-like because his hub no longer has any threads on it.

Suicide wheel from the co-op $20
Used "El-cheapo" cog from the co-op $5
Watching the hipster take one in the gondolas on his bumbike 'Priceless'

Enjoy