Top definition
Gigglegrass is a substance which, when smoked, will induce a general sense of happiness, frivolity and merriment. Giggling is a side-effect of this mood. While normally reserved for the upper echelons of grass quality,
Girl A: What are those silly boys up to?
Girl B: Oh, well you know, someone's been into the gigglegrass a bit!
Girl A: Oh, susan!
by ftrls November 05, 2009
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2
Did you hear they legalized the old giggle grass in Washington state?
by rploeck November 09, 2012
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