Her reasons for leaving were 'obvious'. = It's 'obvious' why she left.
You are stating 'the obvious'. Tell me something I don't already know.
Her doctor immediately noticed the 'obvious' signs of the disease.
(..) What, did you guys forget? lt's your turn to host the slumber party. Okay, you guys. What does it mean... when a guy is in a really bad relationship... and it's really obvious that he wants to be with you... but he just can't seem to break up with his girlfriend? lt means you're a total booty call. (..)2004 White Chicks
(..) -Wait a minute. There is definitely... something different about the two of you. Collagen. You little witch. How did you know? Duh, it's totally obvious. Your lips went from Cameron Diaz to Jay-Z. You got taller, too. We got our knees done. You can do that? -You should do that. (..)2004 White Chicks