1. My brother forgot his keys for the third time this week, he's such a birdbrain.
2. Don't listen to him, he's just a birdbrain who can't remember anything.
3. She's always getting lost because she's a total birdbrain when it comes to directions.
4. I can't believe I forgot to study for the exam, I feel like such a birdbrain.
5. He's a birdbrain when it comes to technology, he can never figure out how to use his phone.
6. She's such a birdbrain, she keeps losing her phone and then finding it in the fridge.
7. I can't believe I left my wallet at home, I'm such a birdbrain sometimes.
8. He's a birdbrain when it comes to cooking, he always burns everything he tries to make.
9. She's a birdbrain when it comes to grammar, she can never remember when to use "there", "their", or "they're".
10. I feel like a total birdbrain for forgetting my friend's birthday, I need to set a reminder next time.