Rizz is internet slang for charm and flirtatious confidence, and it spread widely through TikTok captions, edits and short-form humour rather than from a single film or song. White tee with rizz fits that pattern, pairing a deliberately ordinary item of clothing with exaggerated swagger to make the joke work. As with other rizz sounds, creators reuse it for outfit reveals, confidence edits and playful reactions, keeping it current because the slang and the format are instantly recognisable to short-video audiences.