1 definition by FioraLongears

Top Definition
A prefix usually preceding a verb emphasizing and often exaggerating the haste of something, especially a performed task.
1. OMGLOL, you got instapwned.
2. Fedex rocks, package instarrived on time.
3. Seriously that shitty mindless show needs to be instacancelled before I instasert this screwdriver into my pulsating forehead.
by FioraLongears October 25, 2007

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