Just as the name suggests, it's the place where the needles are kept.
Simon told Hector, "Don't go fucking around under there cause you'll get stuck. See my rig-bag is under there somewhere and you may very well light on it".
by Nikki Stixx June 4, 2019
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someone who is constantly bitching about something; derived from the language Jag
"Quite being a damn rig bag all the time you little douche."
by Jake January 10, 2005
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