Crossword puzzle clue "give a dollar back instead of two"

Give a dollar back, instead of two

"___ is when a guy gets stabbed in the back and, instead of bleeding, he sings": Ed Gardner

"I unintentionally brought Mom's bag of DVDs instead of mine, so in the back seat we watched about 10 minutes of '___' ..."

Four caplets instead of two, e.g.

Four pills instead of the recommended two

Give someone a book that they'll "give back to you when they're done reading," as I did with "The Wind-Up Bird Chronicle" over three years ago

Give back, or get back (for)

"Push 'em back! Push 'em back! Way back!"?