The Living Tribunal getting punked by Reed Richards?!?!
It happened in the latest issue of Last Planet Standing. Yes, I know that that's not the 616 Marvel Universe, but it doesn't matter because no matter what reality you go to you're still dealing with the same LT.
The LT (and the other Cosmics that were with him) decided that what Galactus was doing was possing so dangerous that it possed a threat to the entire multiverse. Their solution? Since Galactus was currently within the Milky Way, they decided to destroy the Milky Way Galaxy and everything in it.
On Earth, Reed Richards was making hs move to put a permanent stop to Galactus, with a weapon that would shatter his essense and spread it throughout the multiverse. As he prepared to fire it on Galactus, a wormhole opened up. It was the LT and his gang preparing to fire on Galactus. Realizing what their blast would do to the galaxy, Reed fired his weapon into the wormhole and it took out the LT and friends.
The weapon shorted out, and with nothing else in his way Galactus arrived on Earth.