Screen Rant

Avengers: Endgame star Mark Ruffalo pulled off an April Fool's Day prank on Instagram 1 / 8

As fans know, Ruffalo is notorious for accidentally giving away spoilers. 2 / 8

Once Ruffalo even spoiled the ending of Avengers: Infinity War - a year before the movie's release. 3 / 8

Ruffalo's reputation for spoiling is so bad his co-stars even tease him about it. 4 / 8

A good sport, Ruffalo willingly makes fun of his own spoilers during talk show appearances. 5 / 8

This time Ruffalo played a prank on fans with an Instagram video promising spoilers for Endgame. 6 / 8

However, when fans clicked the video, it simply showed a loading screen... 7 / 8

...and finally, an April Fools' Day message from Ruffalo. 8 / 8