That sound you hear when you're extracting a spoonful of Jell-O out of a cup or bowl and it resembles the sound of the rush of air that squeezes out of a vagina when a penis or similar object pulls out of it rapidly.
As I was going in for the first scoop, my Jell-O let out a loud Jell-O Queef
a bottle, usually of glass, having a rounded body and a narrow neck. Inside the bottle is an emission or expulsion of air from the vagina that may occur during or after sexual intercourse or (less often) during other sexual acts, stretching or exercise.
I found this "flask_O_Queef" near the back yard the odor was non describable