A few months ago, I pulled up to a red light behind an SUV. The SUV had a sticker (it didn't fit the bumper) that said:
Honk if you would rather be watching the 1997 masterpiece The Mummy starring Brendan Frasier and Rachel Weiss
Of course I honked. Just a short little tap.
He was SO happy! I've never seen someone immediately ramp to 100, start bouncing, then rapidly roll down the window so he could punch the air and give a thumbs up.
Would I honk for pizza? No. But I honked for this, and I'm glad I did.