The act of trying to keep quite but have to laugh uncontrollably.
Whisper-Giggling:

OMGZ YOUR SO FUNNIES BUT MY PARENTS ARE SLEEPING SO I HAVE TO BE QUITE SO I DON'T WAKE THEM

muhushhushhush
by SmokeNaPancake August 30, 2010
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Soft speech enlaced banter inciting light, fluttery comical reactions from the opposing partner.
They flirtatiously exchanged soft grazes and gazes from what they perceived to be an impervious force field that was an old blue comforter, and played whisper giggles much to the chagrin of the other people in the room.
by Drew Buchanan December 27, 2011
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