chirpy

adj

1. In a good mood; happy and energetic.

   “He's surprisingly chirpy for someone who just lost his father.”

   “Judging by the new voice over the PA, we've had a crew change in Plymouth - the warning about masks and the apology for lack of catering is made in a chirpy Cockney twang rather than a West Country burr.”

2. Making chirping noises.

noun

1. An electronic device which uses a piezoelectric transducer to make chirping noise, often designed to be hidden and function as an annoyance
2. Specifically, a version of the above designed to be thrown for placement. Similar to a throwie.