What Does This Mean?
A TikTok and Instagram Reels trend in which a person crosses their eyes, says "boo" and moves toward the camera, often as a prank on a boyfriend or family member who is tricked into joining and then filmed.
REAL-WORLD EXAMPLE
""She did the boo trend on her dad at dinner and he never saw it coming.""
LORE & ORIGIN
Know Your Meme (entry still under research) dates the trend to mid-to-late September 2026 and gives the earliest known example as a TikTok by @v99191 on September 20, 2026, captioned "Booooo". It lists later examples through October 2026, including prank videos on partners and parents. Beyond that page, no further sourcing was opened.
MENTIONS OVER TIME
Radar observation data not yet available for this term.
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