The crusade is on now that Deadpool 2 is finally in theatres. The 20th Century Fox extravaganza earned $125 million over its opening weekend, putting it just below the original Deadpool, which grossed $141 million.

The action-packed filmed boasts a star-studded cast. But there’s one cameo by a certain Oscar-winning actor that hasn’t gone unnoticed. It’s none other than the living on-screen legend, Matt Damon. The Bourne Identity star went all out for this short, but crucial role, disguised by loads of prosthetic make-up, a wig and - *drumroll*, a fake belly.

If you haven’t seen the film, welp, here’s a tiny spoiler alert, the dude who explains how to use the toilet in the movie is, Matt Damon. You probably didn’t catch it, but if you’re down, you should probably go check it out again and see for yourself. Thank us later.

Damon isn’t in any scenes with Ryan Reynolds, who plays is the film’s star, but he does come in contact with Josh Brolin, who plays Cable. Hint: It’s when Cable first appears to cross paths with two rednecks.

Deadpool 2 sees the comedic hero teams up with three mutants -- Bedlam, Shatterstar and Domino -- to protect “the kid” (played by Julian Dennison) from his nemesis, Cable.

Have you seen the film? If not, check out the trailer below and let us know if you'll check it out.