pig in the pipe
n.— «The economic impact of this glut of postwar children is familiar to those in the City, who refer to it as the “pig in the pipe”—the visible signs of the baby boomers charging through the decades.» —“The great generational robbery” by Faisal Islam New Statesman (London, United Kingdom) Mar. 5, 2007. (source: Double-Tongued Dictionary)
Further reading
Ever wonder what medieval England looked and sounded like? In Old English, the word hord meant “treasure” and your wordhord was the treasure of words locked up inside you. A delightful new book uses the language of that period to create...
Some people work hard to lose their accent in order to fit in. Others may be homesick for the voices they grew up with and try to reclaim them. How can you regain your old accent? Also, a compelling book about scientific taxonomy shows how humans...
One U.S. university used the term “the pig in the python” to refer to an extra-large cohort of students. That image is not obscure. “The pig in the pipe” is, just a bit; has the more graphic form become contaminated by the term “pig” for a cylinder inserted into an oil pipeline in order to clean the walls as it passes along?