three-ring circus

Short definition from Wiktionary

Noun

1. 1
   A large circus in which three separate performances, each within its own circular enclosure, are staged simultaneously before a single audience.
2. 2
   A disorderly, complicated, rapidly changing situation or set of events, which is a source of bewilderment, amazement, or amusement.
3. 3
   Alternative form of three-ring circus.