shag maggot Share definition Flag very, very small male member. absolute useless garbage in the pants department. oh no! I can't believe it! he looked a right stud,I thought I was in for a right rodgering, but it turns out he's only got a shag maggot! shag maggot by gomble November 25, 2009 0 0 Get merch Get the shag maggot mug. Buy Now — $32.95 See more merch