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Another term for golfer's elbow. When you do a lot of curling motions, often while working out your arms, and end up with sore tendons that prevent you from straightening your arms all the way. The result is that you stand around with your arms helplessly bent at the elbows, like a Lego dude.
"Hey you know why Gary's standing like that?"
"No, why?"
"He did a bunch of heavy bicep curls a couple days ago and made himself sore. Now he's got Lego arms."
by Ima Linguist June 11, 2018
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