gigglefart Share definition Flag To giggle so hard as to push out a fart, or to giggle at an inopportune time when a fart was already at the brink of excretion, thus expelling when giggling. Pipere gigglefarts when tickled gigglefart by beedlin'mai May 28, 2009 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