rabbit hole

distraktion, tidsdödare, utsvävning, kaningryt, kaninhål, kaninhåla

1. (by extension) A time-consuming tangent or detour, often one from which it is difficult to extricate oneself.

2. Used other than figuratively or idiomatically: see rabbit,‎ hole. The entrance to a rabbit warren or burrow; the whole warren or burrow.