There are lots of obvious, inappropriate times to be chatting it up on the telephone.
For instance, at the movies or during a wedding. Clearly, one should not talk on the phone at these times.
While doing the dishes or giving a small child a bath are two more good examples of when not to use the phone. Can I get an "Amen" from anyone who has ever dropped a phone into warm, sudsy water?
This next one is a little less obvious, but I personally believe that the check out line at the grocery store should also be avoided as a talk time venue. Because the checker, bagger and any other surrounding shoppers just really don't care to listen to your conversation. Save that phone call for the car! (If my husband happens to be reading this, I of course mean everyone else should save their phone calls for the car. I certainly never use my cell phone while driving. Ahem-hem.)
And of course, one should never ever attempt to talk on the phone while simultaneously purchasing airfare online!
Because one might just click "confirm and purchase" and then realize that she booked her family's return flight for a month later than desired.
And then one might find that she has to spend the next hour and a half to correct a ten-second mistake.
And after one has spent said hour calling the airline, canceling the flight, receiving a travel voucher to use to repurchase a flight online (since of course one can't get the cheapo web only fare over the phone), calling the airline back because the website won't accept more than four types of payments (and since the website also automatically split the voucher money even between the four purchased tickets) it wouldn't allow one to use her credit card to pay the $30 per ticket difference changing one's flight incurred, getting back online and making two separate reservations in order to "beat the system" and typing in every one's name and birthday every.single.time one does this!
After all that, one might sit back and think it would have just been easier to spend an extra month at one's sister's house.
So in conclusion, next time hang up the phone, complete the task at hand and then call your sister back for a nice long chat. You'll be glad you did!