Top Definition
A short and to some people (like myself) slightly confusing when you first see it, way of saying "cutie" online.
These fucking cam girls are flooding my MySpace Inbox with dumbass messages. What the hell is a "Q2" anyway?
by Nick Ulanowski May 30, 2007
A type of siren found on Fire Apparatus & Ambulances.

Sounds like an air-raid siren coming down the highway. It uses air to generate its immense sound.
"Fire up the Q2 so we can clear the intersection!"
by J. Koenig September 06, 2006
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