I found this elsewhere.

PLEASE BE AWARE
WHEN ANSWERING
YOUR PHONE!!!
From a friend....
Interesting!
| just got a call from a 304 area code. Thinking it was someone | know in WV, | answered. It was a man claiming to be from customer service (didn't say what company, only "customer service")
The first thing he asked was "Can you hear me?"| remembered something | saw on Facebook saying people are calling and asking if you can hear them, then using the recording of your "Yes" reply as a way to sign you up for all kinds of stuff. So | replied "I hear you" to which he again asked "so you can hear me?"
Me: | hear you
Him: | just need a yes or no
Me: | hear you
Him: *hangs up*
Thanks to whoever posted that story. | probably would have answered Yes the 1st time he asked.

From #OCR interpreted image - errors for free