The phones have been ringing off the wall!

I heard this one on tv during a PBS fundraiser several years ago.  As with any good malaphor, I had to write it down immediately or I would have forgotten it.  This is a combination of “ringing off the hook” and “off the wall”.   It probably was said by someone my age or older, people who grew up with landline phones and where at least one phone was on the wall, usually the kitchen.    The phones at that telethon were not on the wall, however.