Lyric discussion by ladyboygrrl 

Cover art for Smoke lyrics by Natalie Imbruglia

this sounds stupid and over-analytical but it reminds me of abuse- a child hiding from the abuser.

also, 90% of children that have suffered severe abuse don't cry because their emotions are suppressed- hence the 'forgot how to cry'. And with abuse, the memory stays forever- 'can't hide the past'