Historical clue formulations

• "This is not ___" (warning to kids) — 2019-01-15
• "Love is not ___" ("Tears on My Pillow" lyric) — 2017-06-24
• "This bag is not ___" — 2013-04-18
• "This is not ___" (warning label) — 2008-11-09
• "That's not ___!" (parent's admonishment) — 2004-07-23
• Like ___ on a string — 2003-02-15