Top Definition
1. A long, often tiring process with repeated actions and many steps until you eventually reach the finish.
2. Whacking off
"Man, I was proofing all during geometry class, and now I can hardly think straight."
by Schlang (inspired by KenCon) November 15, 2006
Scandalous sexual behavior
She was proofing him in the backseat.
by Elle Marie July 08, 2005
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