you have to be clever, but oh so very alert, when proposing

(Skip the beginning 2 minutes, no one knows how to edit apparently)

When Daniel picked up his girlfriend, Alex, he had a plan for what he thought was the perfect “promposal.”

 He installed signs along a road that said, “Alex. Will. You. Marry. LOL Jk. Go To. Prom. With Me.”
Sadly, Alex missed the first sign and did not know the message was intended for her.

http://fox5sandiego.com/2015/04/17/teens-prom-proposal-does-not-go-as-planned-ends-with-date-in-tears/