SUPERCALIFRAGILISTICEXPIALIFUCKYOU Share definition Flag Noun - To flamboyantly tell someone one of the variants of "fuck you" "He gave John a supercalifragilisticexpialifuckyou the other day." SUPERCALIFRAGILISTICEXPIALIFUCKYOU by DAgility February 7, 2017 0 0 Get merch Get the SUPERCALIFRAGILISTICEXPIALIFUCKYOU mug. Buy Now — $32.95 See more merch