Guys suddenly bulk up on-panel, with biceps, pecs, and quads swelling to ridiculous, vein-popping sizes while they pose or flex. The growth often plays into dominance, with the newly jacked dude manhandling his partner, pinning him down, and fucking him like he weighs nothing. Some scenes lean into transformation vibes, showing tearing clothes, strained skin, and the partner reacting with lust, awe, or intimidation.