Nick Kyrgios is back on his worst behavior.

The mercurial tennis star was facing Kyle Edmund in the Canadian Open days after winning the Washington Open, but his mind was stuck on an inanimate object.

Kyrgios, 24, has had numerous meltdowns throughout his career, complaining about anything from referee decisions to crowd noise. This time around, it was a towel.

The Aussie instructed the chair umpire to radio for a plain white towel, seemingly preferring it to the generic tournament towels.

“I’m f–king frustrated, man, a f–king white towel … I asked him. How hard is it? It’s a white towel, five games for a white towel,” Kyrgios could be heard shouting.

The frustrations carried deep into the first set, which Kyrgios lost 6-3. He repeatedly asked the umpire to have a white towel sent to his chair, never getting the answer he was looking for.

“I’m not allowed to leave the chair,” the umpire said.

“But you have a radio, I asked you at the start of the match. You’re telling me you can’t radio in for one white towel?” Kyrgios responded.

The announcers had to once again apologize to fans for the expletive-laden language picked up by the on-court microphones, and Kyrgios was hit with a code violation.

The white towel finally arrived before the end of the first set, and Kyrgios seemed to calm down during the second set. He brought up the issue again, however, moments before Edmund had a chance to serve for the match. Edmund, who was more than happy with his assigned towel, won the point and advanced to the second round.