Will Ferrell kept the prosthetic testicles from Step Brothers

While it's pretty standard practice for actors to keep set pieces from their favourite films as mementoes, Will Ferrell might be the only star who took home a pair of prosthetic balls.

So when he took to the infamous YouTube series Hot Ones, you can bet that he brought in the laughs - especially when it came to the spicier end of the chicken wings.

As realistic as they look, the balls were, in fact, fake ones - and you can bet Ferrell stashed them as a keepsake after the cameras stopped rolling.

In the clip, Evans says: "As an icon with decades in the comedy game, it's only right with you here that we verify some of the folklore surrounding Will Ferrell.

"Is it true that the prosthetic testicles that you got from the set of Step Brothers, your most-treasured keepsake..."

At which point, the actor interjects, "Definitely... definitely my top one," before quipping, "Top two."

He continues: "I keep them in a little like trophy case, like a proper, you know, like you'd see in a sports memorabilia... like [where] you'd put a baseball, like a signed baseball."

Evans jumps in: "Put it up on a pedestal where it belongs. "Exactly," adds Ferrell.

It's nice to hear they're getting the respect that they deserve.

It was a tough decision because, well, all of his movies are pretty stellar. But ultimately, the 2008 hit came out on top, receiving nearly half of the votes out of ten films.

Ferrell teamed up with Adam McKay and John C. Reilly to create this comedy genius based on two middle-aged men who still live with their parents.

In second place was, of course, Anchorman.

The long list of comedic MVPs in the film helped to achieve its hilarious status, with The Office‘s Steve Carell, Paul Rudd, Christina Applegate and David Koechner all among the cast.