Crossword puzzle clue "it's not yours forever"

It's not yours forever

Yours and yours only

1930s anti-marijuana propaganda film that ends with the principal of a school saying, "The next tragedy may be that of your daughter...or your son...or yours or yours..." [points at the camera] "... o

You may not want to show yours

Not yours, in Tours

Not yours

Song that's not yours

Someone ___ (not yours or mine)