The clotting of anal hair due to the application of excrement.
Oooooo I don't think I wiped properly I've got gruffnuts hangin out of my posterior
by Dave T October 26, 2003
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the pooey mess left behind in the anal hair if an anus is not wiped with enough care is called gruffnut.
Glen recieved lots of gruffnut when he went for a poo and didnt wipe afterwards. This caused a discusting mess to be left in his anal hair over the anal region and his undergarments.
by Chris the gr8 666 January 17, 2006
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noun; a piece (or pieces) of faeces stuck in the hair around your anus
"mate, i found the biggest gruffnut last nite"
by james-is-sexy January 17, 2006
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lumps of dried poo attached to the hairs of your bum. See 'Dangle berry'
God damn she's got some gruffnuts
by adam wallace October 28, 2007
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