- The video in which Angry Grandpa freaks out over Tina bringing a cat into his house. He's screaming at Tina, who is huddled in the Fetal Position around her new cat, as he verbally abuses her and threatens the cat with a hammer.
- Similarly, the video in which Grandpa freaks out over getting a new puppy involves Grandpa screaming at a cute little puppy so much that it wets itself. And they leave the puppy with a psychotic elderly man for hours.
- Grandma's revenge on Grandpa for breaking an Elvis collectible. She sneaks into Grandpa's room while he's sleeping and tries to burn his beard off with a lighter. He's understandably horrified.
- Even videos in which the audience is in on the prank can have some nightmare-inducing moments:
- The video in which Michael stays with Grandpa as a roommate has several moments when Grandpa does disturbing things, such as walking into Michael's room with a knife and stabbing a pillow repeatedly.
- The iMustDestroyAll prank in which Michael convinces Grandpa that a YouTuber is stalking him and actually getting into his house.
- Grandpa's Unsafe Meltdown. He attempts to open a safe that has his candy inside, but fails to do so. After several attempts, he flat out hits it with a bat.