A couple/few/handful of/bevy of
nonsense phrases I used
as placeholders at work today:

wiggity whack bernanners

mother of Moses and Geoffrey

The best thing about gravity is the gravity of gravity.

Okay, not a bevy. Have you ever read the same word so many times
in rapid succession
(this line is optional: succession succession successionsuccessionsuccession)
that it morphs into something ludicrous in your head?
Gravity becomes grayvitty and did you know that
you can’t spell gravity without “it gravy”?
That’s what I’ll tell the students who wish to learn of free falls.
Gravity: it gravy.