in second childhood

in (one's) second childhood

1. In a time of one's life when one's mental capacity is reduced to that of a child, as due to disease or old age. Unfortunately, my grandfather's been in his second childhood since suffering this latest stroke.
2. Experiencing a period of rejuvenated or renewed interest in things that interest a child. I feel like I'm in my second childhood as I watch my son experience the magic of the world. Jerry's sort of been in his second childhood ever since he lost his job, as he's gotten back into model train building and video games.
See also: childhood, second
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

in one's second childhood

Fig. [of an adult] interested in things or people that normally interest children. My father bought himself a toy train, and my mother said he was in his second childhood. Whenever I go to the river and throw stones, I feel as if I'm in my second childhood.
See also: childhood, second
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
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