The line comes from Doctor Who, where the Eleventh Doctor, played by Matt Smith from 2010, repeatedly defended his bow tie as part of his distinctive costume. It became one of his best known catchphrases, printed on merchandise and quoted across fan communities as shorthand for his eccentric, confident personality. As short clips and GIFs spread online, the quote moved beyond the show into general use for celebrating unfashionable or geeky style choices. It remains popular because the delivery is sincere, memorable and instantly linked to that incarnation.