#illdothiswhenpigsfly
Top Voted Definition for #illdothiswhenpigsfly
The phrase "when pigs fly" (alternatively, "pigs might fly") is an adynaton—a figure of speech so hyperbolic that it describes an impossibility. So when people say they will do something "when pigs fly" it means they will never do it. Hashtag is used sarcastically to indicate something a person won't ever do.
1