Top Definition
A sensation often charecterized by obsessive laughter for long periods of time in high-pitched tones. Side effect symptoms can include the falling off of chairs and drooling.
She sounded like a witch when she was megaweaking.

That girl had the whole class staring after that megaweak.

Her face was wet after megaweaking.
by Jenny from the blockk December 07, 2009

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