when you jump and almost curb stomp yourself. The biggest fail known to man.It occurs when someone is being stupid.
"Dude! did you hear that your little bro curb failed?"
"OMG no"
"He was jumping on a bed and curb failed"
"OMG no"
"He was jumping on a bed and curb failed"
by The dude doin your mom January 26, 2010
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curb fail
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