Ellen DeGeneres [1] teamed up with Melissa McCarthy to execute a hidden-camera prank [2] on Tuesday, and you better believe the results were LOL-worthy. It all went down at a local dry cleaners in Burbank, CA, where Melissa walked in with a heaping pile of clothes in hand and an earpiece installed so Ellen could tell her exactly what to do and say the entire time. Melissa kicked things off by telling an innocent employee at the front counter how she took Tylenol PM and drank "sleepy-time tea," which made her feel "pretty f*cked up." The 49-year-old actress then rattled off a handful of "inspiring quotes" before pretending to faint — pretty convincingly, might I add. Throughout the entire prank, Ellen could hardly keep it together as she barked orders between fits of laughter from her studio. These two make quite the hilarious duo [3]! Watch the prank unfold above.