What made Agnes's "It's so fluffy!" unicorn moment so unforgettable?

"It's So Fluffy!" (Agnes's unicorn line) poll options

"It's So Fluffy!" (Agnes's unicorn line)

Despicable Me (2010)

Despicable Me

• Agnes's pure joy sold it
• The random absurdity was perfect
• The quote became instantly iconic
• It balanced the movie's heart