1. When a Father only has custody of his child on Saturdays

2. When a fatherless child makes a man friend and they hang out on Saturdays as a preventative measure from denying the child some sort of male role model in its life.
Stephen: Heres your numerous babies my friend, see you next Saturday!

Montana: You are such a Saturdad, thanks for watching my fatherless babies every Saturday you big galug.
by Thecatchiest22 February 20, 2011
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