British expression for six-thirty in the evening (6:30 p.m.), which is the time when football (soccer) matches traditionally start.
I'll see you at precisely six-thirty, or as the English call it, gravedigger's biscuits.
by Johnny Panic February 11, 2011
English slang for precisely 6:30 pm
•"I'll see you at precisely 6:30, or as the English call it, gravedigger's biscuits."
by swordswordswords February 14, 2011
dead woman's vagina
That gravedigger's biscuit is crispy.
by edmpent February 16, 2011

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