Top Definition
The act of taking anabolic steroids for performance enhancement. Usually abused by meatheads and BDAs alike. Side effects include back zits, temper tantrums and shrinkage.
That BDA is definately roiding out. Did you see the size of his arms?
by geniusH August 05, 2006
taking large quantities of steroids or any other muscle enhancements that majorly increases your size
roid-ing out :stop roiding out it makes your dick small
by Triviking101 January 17, 2016

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