If Your Ears Are Burning, Someone's Talking About You
"A sudden burning or tingling sensation in your ear means someone, somewhere, is talking about you."
Genuinely ancient, not a modern invention. Pliny the Elder records the belief in his Naturalis Historia in the 1st century AD: a burning right ear meant someone was praising you, a burning left ear meant the opposite. Chaucer references the same idea in Troilus and Criseyde in the 1380s, and a 16th century poem, "Of the Burning of the Eares" by James Yates, deals with it directly. There's no mechanism connecting a stray physical sensation to what someone else happens to be saying elsewhere, so this isn't really "busted" so much as it was never a testable claim in the first place, just two thousand years of continuous superstition.