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An unspoken rule that dictates when two motorists are parked next to each other and inter their car at approximately the same time, the one that starts his/her car first gets to back out first.
Should the cars start at the same exact time, eye contact should be made to decide who is to back out of his/her spot first.
Adam got in a wreck with a lady who didn't abide by the back out rule. He started his car first, but she backed out first so Adam hit her thinking he was in the clear.
by TTM January 08, 2006
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