Employee hilariously pranks his co-worker with a hidden speaker and some disco music.

Like many of us, Imgur user ChefSchwasty works in an office. The daily grind can get a little boring, so naturally, sometimes you need to do something to liven the place up. Chef apparently likes to prank his co-workers.

A few days ago, Chef orchestrated a hilarious, genius prank on one of his co-workers, who he refers to as D. Chef hid a speaker in the ceiling above D's desk, which he set up to softly play "Stayin' Alive" by the Beegees on repeat.

Chef paid close attention to D all day to see if he'd notice the song, and kept a hilarious hour-by-hour log of his progress.

Here's how the morning went: