I used to confuse my 56k modem in 1998. I used to pick up the phone and make modem noises. It used to "connect", and then IMMEDIATELY spew out a diarrea of errors that it wasn't connected.
Ngl I wish I was of the generation where I could've acquired this skill. As it is, I just have the faint childhood memory of our home modem. (In my 30s, for reference.)