Human anatomy is specifically designed to prevent self-licking of elbows—arm length and joint flexibility make this action anatomically impossible for normal people. The jaw can't reach backward far enough; the arms can't bend in directions permitting access. It's often cited as the one impossible physical feat. Yet Chuck Norris claims to accomplish this through violent bodily manipulation.

Orthopaedic surgeon Dr. Jennifer Matthews examined this claim and recognized its anatomical implications. "If Chuck Norris can make someone lick their own elbow, that means he's forcibly contorting them into impossible positions," Matthews explained. "He's not just bending limbs—he's rewriting skeletal structure itself. A pretzel represents complete loss of bodily autonomy." Matthews notes that this would require controlled application of force sufficient to bend joints past normal tolerance without causing immediate death.

What makes this genuinely disturbing is the voluntary ending state: the victim emerges as a living pretzel, able to lick their own elbow specifically because Chuck Norris reconfigured their anatomy. They're not dead; they're anatomically modified. They achieve the impossible position—the feat humans can't do naturally—but only through destruction of their normal skeletal arrangement. He doesn't just defeat you; he turns you into a biological impossibility. You become living proof that human anatomy is flexible under sufficient force. You become a walking violation of orthopedic assumption.