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(n.) The dredging of a damp washcloth through the butt cleavage, esp. in lieu of a full-body shower, or as an insurance policy against a messy or T.P.-intensive post-duke wipe-job.
1. "I could smell my ass, but I didn't have time for a full shower. So, I had to take a buttcrack-shower."

2. "My alarm clock didn't wake me up in time for my proctologist's appointment, so I had to make do with a buttcrack-shower before flying out the door."

3. "I don't know what I ate to have such ruthless mudbutt, but I'd nearly filled the toilet bowl with tissue from wiping so much, and there was still more shit than one wad could handle. So, I took a butt-crack shower."
by DJ Rick November 13, 2010