Whistling to disconnect modem

Sometimes when I’m online (dial-up), I’ll find myself in a different room from the PC, needing to free the line so I can use the phone. Being a lazy, impatient flibbertigibbet, I disconnect the modem by whistlin’ down the phone.

Am I harming my modem by doing this?

There’s a chance your modem will interpret this as data, and create a supervirus that will take over the world!

Well it might in Hollywood.
So, um… no.