Heartburn (The Grim Adventures of Billy & Mandy)

"Heartburn" is the second half of the eleventh episode in the sixth season of The Grim Adventures of Billy & Mandy, is the 20th/final episode of that season and is overall the 140th/final episode of the series. Not only does "Heartburn" serves as the season finale of season six, but its also the last normal episode before the two TV Films, the Codename: KND/The Grim Adventures of Billy & Mandy Cross-Over film, "The Grim Adventures of the KND" and "Underfist: Halloween Bash".

Plot
When Billy starts taking pictures with a camera found in Grim's trunk, Grim tells him that is an Underworld's True-Heart Camera, which shows the real essence of a person's heart. When Mandy takes Irwin's picture, it is revealed that he is actually half-good and half-evil.

Why It Gives You A Heartburn

 * 1) As always, Billy steals Grim's True-Heart Camera from his trunk and takes pictures of everyone at school without their consent. He couldn't even tell the difference and thinks it's his camera when it clearly says "Grim" on it. He then tells Grim to destroy his shirt as it apparently doesn't belong with his style of clothing.
 * 2) The Colonel Major Cheese rap could get pretty annoying after a while and is a bit repetitive.
 * 3) Irwin's half-cute half-monster picture looks pretty messed up and disturbing.
 * 4) It was never explained how Irwin became a light-hearted and good kid - we just saw his father telling him off for taking another kid's pacifier... and that's it.
 * 5) Mandy changing constantly and going all over the place and her looks are very disturbing to watch.
 * 6) A few gross moments, such as when Irwin rubbed cheese onto Mandy.
 * 7) Bad & predictable ending: After Mandy and Irwin finally kiss, Mandy changes back to evil when Irwin burps in her mouth, lets out steam and punches him saying that she hates Colonel Major Cheese. Irwin says he apparently knows everything about Mandy and Irwin loves how mean she is and gets punched again. And it ends with Irwin saying it isn't easy being a player.

Redeeming Qualities

 * 1) The True-Heart Camera seemed interesting, despite the poor execution.
 * 2) Thankfully, the franchise got saved a year later with the TV movie, "Mh:greatestmovies:Underfist: Halloween Bash" - which redeemed the horrible ending of this episode.