Twib Share definition Flag Stands for Typical West Island Bitch. Name of the people living on the west side of Montreal Island. He barely ever goes downtown, what a twib! Twib by Fed98 July 25, 2016 Words you can keep railfan mug chonk mug chud mug based mug 67 mug slime mug mogging mug chopped mug thot mug glazing mug huzz mug yams mug larp mug unc mug cracked mug simp mug baddie mug bop mug lolcow mug