Top Definition
Hulk bulking is the art of bulk eating whilst going to the gym. Testosterone is also used as a boost by meat heads at the gym to get maximum gains. People who hulk bulk walk around with size XS T-shirts on to make themselves look even bigger whilst bulking.
"Hey sam, I hear you were hulk bulking the past few months! How's it going?"
Sam: " Yeah, been hitting so much test and going to the gym everyday. You should try hulk bulking "
by Mikethebigboss October 09, 2013

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