Are there any purely humorous jokes?

After the night self-study, I was waiting for the elevator on the 14th floor of the library. Standing in front of me was a pair of junior students who were also waiting for the elevator. When the elevator came, the boy whispered in the girl's ear: "Can I kiss you today?" The girl glanced at him shyly: "No...unless you can get to the first floor before me by taking the stairs." The boy hummed happily. With a cry, he ran down the stairs. I thought he wouldn't be as unlucky as my brother, so I walked into the elevator, reached out and turned on all the lights from the 14th floor to the 1st floor... I sat on the 10th floor and then came out and took the stairs... all the time I didn’t dare to look back at that girl’s eyes... Come on, junior, seniors can only help you get here...