Strange idea and I need your opinions!

We are ttc#3. My husband doesn't get too excited about anything lol I had made a joke one time that I was going to test and give to him before I see and let him announce to me that we were pregnant:) thought it might be fun but looking online doesn't seem anyone does that..... I honestly don't know if I have the self control to do that however I wanted you're opinions on the idea? Fun? Or dumb...? Also if you would like to include you're announcers to hubby feel free to share if I do it myself I need ideas!:)