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1.(vulgar) An incompetent individual; one who errs frequently.
He is such a DLR.
2.(vulgar) A severe mistake.
...That DLR totally cost you the chilli shot.

Translations Finnish: kämmäri (slang)
Russian: долбоёб ru(ru) (dolbojób) m. ]

Verb to DLR (third-person singular simple present DLR, present participle DLRing, simple past and past participle DLR'd)
1.(intransitive) (slang) To make a mistake, to go wrong
You really DLRd this time.
2.(transitive) To botch or make a mess of
I DRL'd my line in that scene.
3.(transitive) to injure or damage
I DRL'd my spinal cord while making that amazing human pyramid in bath.
by Zimmee Zimmee March 29, 2011
David Lee Roth. Former frontman for rock group Van Halen and current paramedic attendant. The pwnliest man alive.
I wish I were around when DLR was at his peak of pwnliness.
by Machino July 08, 2005
A man's hairy gut aka David Lee Roth. Named after David Lee Roth, original front man of Van Halen, and his ability to let his hairy gut show.
Look at that ol' boy showing off his DLR.
by Madman_Moyer January 13, 2010