Ideas are iterative, as any designer knows. This one traces its roots back to (and perhaps beyond) an episode of The Simpsons and perhaps beyond, solving the timeless problem of people wanting to lean back in chairs, heedless of their own safety.
The Attitude Chair is a simple red chair from IKEA, adapted via an H-shaped swing-out support that provides a backstop before you tumble over backward while leaning on it.
This particular variant is by New Yorker Deger Cengiz, who states: “Attitude Chair is developed for teens with attitude; prevents falling when the chair is tipped back. The flip-support mechanism works with gravitational reflex principles.”