(slang) A bodybuilder who uses, or appears to use, steroids and lacks intelligence; (extension) any large, strongly-built man.
How to increase the natural anabolic effects in your system so you pile on muscle like a juice-head!
2002. Rick Collins, "Legal muscle: anabolics in America"
I'm also a seasoned juice head. During this tenure in muscledom, to say I've seen It all is a severe understatement, especially considering I spent 20 years of it training at the "Mecca of bodybuilding," Gold's Gym in Venice
My ideal man would be Italian, dark, muscles, juicehead, Guido.