In the *Bartolo Brothers* vlog episode titled *"STEALING 1,000 CC BIGBIKE | FAT MAN | 'PUBLIC PRANKS' | Sister and Brother are so bad,"* the siblings orchestrate a wild and intense prank where they pretend to steal a 1,000 CC big bike, targeting a heavy-set man (referred to as "Fat Man") as part of the joke. The premise of the prank revolves around the siblings acting as if they are tampering with the powerful motorcycle in a public space, causing confusion and panic among bystanders, including the bike’s owner.

The "Fat Man" becomes the focal point of the prank, reacting with alarm and disbelief as he believes his prized bike is being stolen. The situation escalates with comedic tension, and his reactions range from shock to frustration, making for a high-energy and chaotic prank.

The title, *"Sister and Brother are so bad,"* highlights the mischievous and slightly daring nature of the prank, as the siblings push the boundaries of public humor. Their playful chemistry adds to the fun of the episode, making it both a daring and memorable prank that blends humor with an element of surprise.