1. Slang, noun;
Any variation of the male penis, erect or otherwise.
2. Slang, adjective;
Used to describe the drunk uncle that crashes Christmas dinner and is usually the only one still smiling at the end of the evening.
Ex. 1.
The cheerleader's eyes widened when she gazed upon the Varsity Quarterback's bald headed giggle stick in the back seat of his father's Oldsmobile.
Ex. 2.
That bald headed giggle stick, Uncle Eddie, drank all the egg nog!
randy gave her the golden giggle while tickling her.
When someone with a runny nose suddenly laughs and makes a bugger bubble unexpectedly.
Person 1 - Sarah laughed so quickly she made a booger bubble!
Parson 2 - lol her allergies give a lot of giggle bubbles!
When you are feeling extremely horny and you try to hold back laughter, but you fail and end up snorting. Usually resulting in a boner kill.
"She was about to suck my dick, but then i got major under giggle."
When someone exhales short and quick breathes but also sounds like they are giggling or laughing at the same time. Short bursts of quite laughter.
"She likes to breathe giggle so that way her laugh isn't too loud to wake everyone else up."