Jack Sawyer got prank called

[wufwugy]

^ You have done it wrong

The prank is funny because the guy is unwittingly screaming at a soundboard of himself

Science has proven that pranks calls are almost never funny, and that this one is a few in all existence that are actually good

[OngBonga]

The prank is funny because the guy is unwittingly screaming at a soundboard of himself

Oh, that went over my head. In which case, it's tons funnier than my attempt.

Prank calls are funny, but only if you're the one making the prank call.