my bestfriend & her boyfriend got really serious one year & on april fools day i didnt think about it but they told me that they were getting married she had a ring on that finger & i didnt know what day it was so i went along with it i said congrats & asked if they knew the plans for the wedding yet. They kept at it until 5:00 that night & than started laughing i said what they said april fools day & i said what do you mean & they said we got you its april fools day