Classic:
* What did the girl say to the ocean? Nothing, she just waved.
* Why don't they play poker in the jungle? Too many cheetahs.
* What did the left eye say to the right eye? Between you and me, something smells.
Modern:
* What did the girl say to the coffee machine? "Don't even try to blend in."
* Why did the girl break up with the calendar? Because he was too full of dates.
* What did the girl say to the mirror? "Quit staring at me, you have your own reflection to look at!"
Puns:
* What did the girl say to the tree? "Leaf me alone!"
* What did the girl say to the pizza? "You're the only one I can rely on."
* What did the girl say to the computer? "Don't be so hard on yourself, you have a lot of megabytes."
Bonus:
* What did the girl say to the boy after he asked her to marry him? "Oh my God, that's so romantic! But, first, let me take a selfie."
Remember: Humor is subjective, and what one person finds funny, another might not. These are just a few examples to get you started.
Pro tip: You can adapt these jokes to your own personal style and experiences for a more relatable and impactful punchline.