Mr Tickle was the first character in Roger Hargreaves' Mr Men series, introduced in 1971 as a cheerful orange figure whose very long arms exist only to tickle others. The books became a long running children's franchise with television adaptations, keeping the character familiar across generations. Online, the name and tickling idea were shortened into a quick meme sound used whenever a scene suggests teasing or unstoppable laughter. Its lasting appeal comes from that instant recognition, even for viewers who have not read the books in years.