Walter Matthau - womb of time
That was such a funny scene when Kotch was with the pregnant mothers at the birth lecture and he made some comments about the use of the term "womb," 9as opposed to the more correct term "uterus,") followed by mentioning that he had no idea what "womb of time" meant.
Something that's in the "womb of time" could be considered to be something that will reveal itself in good time, or maybe, reveal itself much later in the future - much like a child in its mother's womb, waiting to be born.
I'm glad that the movie made me at least ponder the term.