The topic was "TV crossovers." (It's harder to make it exactly 100 words when it has to scan, too.)
All the Whos down in Whoville loved Lana a lot,
But one guy out past Whoville completely did not.
Her blinks and her nods
He did not find beguiling.
Her pinks and her blacks
He did not think were styling.
This cat, who was green
(And sometimes could glow)
Thought Lana obscene,
And a whole World-of-No.
So, when that Pwetty-Pwintheth
Launched into her spiel,
About parents and horsies
And how lies made her feel,
This dude, called the Grinch, shouted,
"Lady! Enough!
I've had it with all this lugubrious stuff!"
Lana kept talking,
and the Grinch blew her up.
Darn.