Answer:
Where jewelry pierces your head.
What has many keys but cannot open a single lock or door?
What goes up and down but never moves?
What goes trough your head but you forget it like 3 days after?
What's that 7 letter word with thousands of letters in it?
If itβs information you seek, come and see me. If itβs pairs of letters you need, I have consecutively three. What am I?