Panel from "Not All My Power Can Save Me!" in Tales to Astonish #75 (January 1966), script by Stan Lee, layouts by Jack Kirby, finishes by Mike Esposito, letters by Sam Rosen
Wow! Whatever it is, it's big. Oh, that's it! The "T" must stand for...titanic!
Anyway, in a twist (hey, the T must stand for...twist!), Bruce Banner's mysterious T-Gun is used to target (hey, the T must stand for...target!)...the Incredible Hulk! Hey, the T must stand for...THE!
And that (hey!...), ladies and gentlemen, is the last anyone ever saw of the Incredible Hulk. The End! (Hey!...)
Or, possibly, television cartoon!
Marvel Super Heroes: The Incredible Hulk in "Terror of the T Gun" (November 23, 1966)