The phrase, evoking a state of infatuation, is often used metaphorically, though it can literally refer to a physical posture. In the metaphorical sense, it signifies being completely enamored or deeply in love with someone or something. For instance, a reader might be completely captivated by a novel, while in a literal context, it could describe someone doing a cartwheel or handstand.
Understanding the dual nature of this phrase is important for interpreting its meaning in different contexts. Its figurative use adds depth and emotional resonance to descriptions of intense passion or enthusiasm. This vibrant imagery contributes to richer communication, allowing writers and speakers to convey strong feelings effectively. Historically, the phrase likely originated from the physical act of tumbling head over heels, with the metaphorical meaning developing later to associate the disorienting and exhilarating experience with the emotional upheaval of love or passion.