Top Definition
A longboarding event that is hosted in Albuquerque, New Mexico, among the most beautiful ditches and tunnels you will ever see in your life. Basically, one of the best longboarding events of the year.
- Eyyy, are you going to be at Ditch Slap next year?

- In a second, man. I've been itching to tame those concrete monsters since last year.
by Ciscokiddddddd May 07, 2009
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