On What's The Use, Mac Miller says

"Catch me if you can but, you'll never catch me, damn"

Which is a reference to both the song with flylo and DAMN.

Then thundercat does his signature bass lick at the same time nodding to his role on TPAB.

Basically they said it all without saying it and let the listener connect the dots.

Any other similar examples?

Guess you could call that

A motif