Used as an exclamation. Can be used in suprise, or in excitement. Is usually used when referring to
something happening to someone else, as in a put-down.
From the phrase "Oh Bust!" which was used when one party would verbally bust on another and the bystander would say "Oh Bust". It has morphed from "Oh Bust" to "Oh
Bus" to "
Bus" to "Busticle", or "Oh Busticle".