Burst Your Bubble

The image is old, a fragile bubble popping without warning, but the phrase's specific history is tangled. An 1810 issue of The Monthly Mirror uses "bubble" in a related sense, and a figurative "burst someone's bubble," meaning to spoil their fun, is attested from the mid-19th century, though the exact phrase most people use today seems to have settled into place only in the mid-20th century. Playful modern theories linking it to bubblegum or childhood soap bubbles are widely repeated but entirely unproven, and a more historical theory ties "bubble" to 17th and 18th-century speculative financial schemes that famously collapsed, without solid proof either.