I forward my voicemail to it so my rejected calls go to him.
And yes, this doesn't have the separate loop for when they don't say anything at all.
From the calls I've gotten so far, it looks like they all immediately recognize Lenny and hang up. So I might have some TTS generate the same lines but in a different voice.
Or just let them talk to an LLM. But that's less funny than getting got by a bunch of wav files.