1 definition by Charles T Mullen

Top Definition
A donor bike is a ridiculously small mini-motorcycle that has become a nationwide menace the past few years. Donor bikes are identified by the presence of an idiot behind the handle bars, no helmet and a blatant disregard for traffic rules. Additionally, 80% of riders at some point become organ donors after the required fatal crash.
"Look at Jose on his new donor bike!!! Hope his organ card is updated!"
by Charles T Mullen February 15, 2006

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