I was riding on a bus the other day(don't mean to brag)
and
sitting across from someone who was talking very loud(practically screaming) on their cell phone
and
through doing so revealed a lot of unnecessary information about them self to everyone on the bus.

They also happened to be sitting directly in front of a sign that said something to the effect of:
Be courteous. Don't be the annoying one using your phone on the bus.