ok doser
lifeguard at the cement pond
I think what's interesting are words that hang around in the lexicon even after they've become obsolete. We still use "dial" for making a phone call, even though some kids today haven't seen a rotary phone. And phones still "ring", even though phones with bells on them have become scarce as well.
older folks know what you mean when you pull up next to them and make a "roll down your window" motion
kids have no idea
and the turn signal sound? totally synthetic - it was originally produced by a electro-magnetic relay that had moving parts that produced the sound
now it's all electronic, but in order to have an auditory cue to remind you that it's on, it's produced with a speaker