rabbit hole
nounDefinition of rabbit hole
: a complexly bizarre or difficult state or situation conceived of as a hole into which one falls or descends
I wanted to show this woman descending into the rabbit hole: this loss of self, becoming a servant to her job and to the work.— Jessica Chastain
especially
: one in which the pursuit of something (such as an answer or solution) leads to other questions, problems, or pursuits
While trying to find the picture again on Google, I fell down the Cosmo rabbit hole, scrolling through a gallery of swimwear, then through "How to Be Sexier-Instantly" and then through all 23 slides of "Sexy Ideas for Long Hair." — Edith Zimmerman Because it is so early on in this work it is easy to say that we are either at the edge of a remarkable new and useful science or that we are careering down an environmental rabbit hole. — Jack Hitt In the season-two premiere of HBO's Westworld, viewers were again tossed down a rabbit hole filled with theories, where one open door leads to many more closed ones. — Josh Wigler and Zoe Haylock