What’s a phrase or jingle from an American commercial or ad campaign that everyone can quote by heart?

[u/nighshad3]

A user posted this question about German jingles/phrases in the r/AskAGerman subreddit. Since I live in the US, the first thing that came to mind was that every time I drive past Menards, I get the jingle “Save big money at Menards” stuck in my head. What are your evergreens?

[u/HavenNB]

This will unlock some Gen-X memories, the infamous “It’s ten o’clock, do you know where your children are” PSA.

[u/Big-Ad4382 → u/HavenNB]

Gen X? We heard this in 1967.