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1.
A polite way of saying 'motherfucker', with the derogatory connotation added to it. Can be used in multiple situations, like frustrating moments or to describe somebody who you don't particularly like.
One bangs their knee on the table.

'OH MOTHERHOOHAW'

'So, are you handing in that essay tomorrow?'

'Hell no, I'll do it in my own time, motherhoohaw!'
by poppyseedishful August 16, 2011