It is my uderstanding a chuppa is declaring a thing with the official fulfillment of being an under-achiever, a dud or an object or thing enveloped in a cloud of darkness. A chuppa can be disappointingly ineffective or fail to accomplish a goal.
My three step kohak lost the majority of the hi at age 3 so I with reluctance declared it a chuppa and gave it to a friend who thought it was beautiful.