This morning I was wondering where the sun was, but then it dawned on me.
Why this joke works
A Realization at Sunrise
“It dawned on me” normally means that an answer suddenly became clear. Dawn is also the moment morning light appears, so wondering about the missing sun ends at exactly the time the familiar phrase becomes literal. Tell the first half like a genuine, sleepy question and avoid emphasizing “sun.” Pause briefly before “but then,” allowing the listener to expect an explanation. The final phrase can stay completely natural because its ordinary meaning and the sunrise picture arrive together without extra help.
A closer look
The Arrival of Morning Becomes a Sudden Realization
The narrator begins with literal uncertainty about the missing sun. “Dawned on me” usually means an idea slowly became clear, while dawn is the morning light that resolves the question. The phrase lets understanding and illumination arrive together. “This morning” establishes the correct time without announcing the wordplay, and the mild self-importance makes an inevitable sunrise sound like a personal discovery.
Fact behind the joke
Dawn Begins Before the Sun Reaches the Horizon
The National Weather Service defines civil dawn as the morning moment when the sun’s geometric center is six degrees below the horizon. Civil twilight continues until sunrise, with enough atmospheric illumination for many objects and activities to become visible. Clouds, terrain, seasons, and latitude affect what an observer sees, but the sun has not vanished overnight; Earth’s rotation changes its apparent position.