three-ring circus

noun2

1. •
   A large circus in which three separate performances, each within its own circular enclosure, are staged simultaneously before a single audience.
2. •
   A disorderly, complicated, rapidly changing situation or set of events, which is a source of bewilderment, amazement, or amusement.

   • Indoor track can be a three-ring circus, with so much going on in the space of a few evening hours that the fans hardly know where to look first. — 1963