Matt LeBlanc broke character in this Friends scene and no one noticed for 20 years

The ten-year run of Friends has long finished and yet the series remains alive as fans continue to discover hidden goodies in episode reruns.

Most recently, we discovered there’s something going on with Matt LeBlanc “Joey” in season 4 episode 22.

It’s the 1998 episode where Joey loses Ross’s wedding ring (The One with the Worst Best Man Ever), and in the scene in question Chandler and his two partners-in-crime, corner the stripper who they think stole the ring.

Ross is, predictably freaking out...

But hang on...where's Joey gone...?

Did you see it?

Here he is, muffling laughter in the background

It's a wonder the other two manage to keep a straight face, to be honest.

And maybe it wasn't laughter. Maybe he sneezed. Or coughed. Or he was eating a sandwich.

But let's be real. He was probably laughing.

H/T: Buzzfeed