Fucktastic Share definition Flag 1. Saying that something is 'fucking fantastic'. 2. Used in sarcasm. 1. Gosh that sex last night was fucktastic!! 2. She's not leaving? Oh thats just fucktastic! Fucktastic by Brade June 30, 2011 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