Giggle Slut Share definition Flag Someone who laughs constantly at jokes, whether they are funny or not. They make you not want to tell jokes anymore. ”Angelica is such a giggle slut, she laughs before I get to the punchline!” Giggle Slut by Giam May 28, 2018 0 0 Get merch Get the Giggle Slut mug. Buy Now — $32.95 See more merch