Yesterday I received a call on our house phone (we still have phone lines), and I always pick up the wireless one (we have a very old wired one in the kitchen, for example). Hours later we went to have dinner outside and for some reason, I didn't need to use my smartphone, so I didn't notice I put our wireless phone in my bag instead of my smartphone until my mom needed to make a call with it hours later.
So in short, I left my smartphone at home, and took the standard phone with me and had it on me for hours x_X.
I promise I am not THAT clumsy and this is a once-in-a-lifetime brain poof ^-^;