The remains of a discarded cigarette with at least 10% left unsmoked. Often found down on the park, stained with urine or white lightning.

Sometimes, desperate or trampy people may spark up a skreb end and finish it off. With any luck, they will die of dysentery as a result.
'You know what you two need?'

?

'A Piss stained SKREB END!'
by needs4crying November 30, 2009
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