This sound effect is also known as the "Diddy Laugh" (which is named after Diddy Kong when the laugh sound effect is used in the intro for Diddy Kong Racing) can be found on The Premiere Edition Volume 1, which was made by The Hollywood Edge. It is oddly a duplicate of Hollywoodedge, Giggling Two Childre PE131001, which is available on the same library. Links: https://soundeffects.fandom.com/wiki/Hollywoodedge,_Two_Young_Kids_Giggle_PE143501#Audio_Samples