Originally published on ProWrestlingSheet.

The extremely popular "Unexpected Cena" meme has now became a real life gag thanks to Cricket Wireless -- and the video is HILARIOUS!

As seen in the video, fans were asked to audition to be ambassadors for Cricket's John Cena Store ... but didn't know the 15x champ was hiding behind the set waiting to surprise them.

One-by-one the unknowing participants begin to introduce Cena for the audition, as if he weren't there -- only to have the wrestler pop through a paper background with mariachis playing his theme.

As you can imagine, there was lots of screaming, freaking out, and even some falling down.

Cena has proven once again that you can't see him ... until you do.