When two or more people shitting on each other for fun get a rash from the sheer onslaught of runny hot shit all over their face.
'Andy seriously regretted taking Megan out for a curry after he went to work with scat rash of the cheek'

'What's that on your face? Oh it's just some scat rash. Me and Albert were scat slapping each other last night'

'Greg happy slapped Billy so hard he looked like he had scat rash for a month'
by popthecorksurf19 March 8, 2009
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