juggle eggs
v. To perform a difficult feat, particularly a complex mental task that can‘t be interrupted for fear of losing the train of thought.

Example Citations:
juggling eggs vi. Keeping a lot of state in your head while modifying a program. ‘Don’t bother me now, I’m juggling eggs’, means that an interrupt is likely to result in the program’s being scrambled. In the classic first-contact SF novel The Mote in Gods Eye, by Larry Niven and Jerry Poumelle, an alien describes a very difficult task by saying ‘We juggle priceless eggs in variable gravity.’
—Eric S. Raymond, The New Hacker’s Dictionary, The MIT Press, October 11, 1996

An addendum here, a few classes filled there and the schedules I had prepared are useless. Making a schedule here is like juggling eggs.
—Karen Sollazzo, “Registration from hell,” The Gazette, August 27, 1995

Earliest Citation:
Playing the stock market lately has been as tricky as juggling eggs in the parlor.
—David Pauly, “The Public Utilites Bounce Back,” Newsweek, May 24, 1982


You juggled eggs to get me out alive and God knows I’m grateful! But do you expect me to forget that Douglas was behind it?
—Robert A. Heinlein, Stranger in a Strange Land, Putnam Publishing, June 1, 1961

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