Duke grabs a nearby mook for protection when the Big Bad opens fire, but the shot penetrates the mook - and Duke along with it.
Alternatively: Duke grabs the mook to absorb the gunfire, only for the Mook to elbow him in the face.
After Duke collapses, the Big Bad walks over... then gets sucker-punched when Duke jumps up and attacks.
Alternatively: And yet he still gets shot, inadvertently shielding Duke from gunfire.
Parodied: Duke, a broad-shouldered Action Hero, is saved by a rail-thin mook who absorbs the hundreds of bullets fired at them.
Zig Zagged: Duke grabs the mook to absorb the gunfire but it passes right through him. As Duke collapses, Duke's friend grabs Duke and the mook, and proceeds to use the two of them to absorb gunfire successfully.
Averted: Duke knows that this tactic won't work and doesn't use it.
Enforced: "Duke's the Action Hero star of our six-movie franchise, he's supposed to do stuff like this!"
Lampshaded: "Thank you for your squad of walking bulletproof shields."
Invoked: Duke deliberately hides until a Mook is in arm's reach before attacking the Big Bad.
Exploited: Charles knew Duke would get a Bulletproof Human Shield at the first opportunity, and plugs him with a sniper-round through the Mook.
Defied: The Big Bad arms his minions with guns of sufficient firepower to penetrate multiple targets.
Discussed: Before they attack the enemy, Duke reminds his sidekick to grab a Mook for protection.
Conversed: "It's amazing how bullets from automatic weapons conveniently stop after hitting the first target."
Reconstructed: Duke is sentenced to execution by gunfire, and at the last moment he hides behind another inmate, who takes the bullet. He then escapes in the confusion to hide behind mooks another day.