tetera syndrome
the tetera syndrome describes the situation in which the victim isn't able to shut the fuck up. they make weird noises which sound like a tea kettle (= spanish - tetera)
"Oh? What is that noise?" "Don't worry, it's just Selina. She recently got the tetera syndrome. She's in her quirky-silly-goofy mood. Give her ten minutes and she will be quiet(er) again."