1 definition by ThuggyC-Reddog

Top Definition
A castonguay is a girl that can not get you off sexually.
I was with this castonguay last night and she couldn't get me off so i ended up jacking myself off.

Na man I can't get with her, I herd she is a castonguay.
by ThuggyC-Reddog March 30, 2011

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