Margrier Share definition Flag A short prick who supports Manscumster United and aspires to one day play football like the legend that is Nani. Matt: Have you seen Margrier?Luke: No, but I think you just squashed him. Margrier by Seamus is such a lad November 8, 2012 0 0 Get merch Get the Margrier mug. Buy Now — $32.95 See more merch