The song "Ayo" is sung by Colombian singer and songwriter J Balvin. The catchy chorus features the repeated phrase "Ayo, ei ei ei ei ei, Ayo" and has become a popular part of the song. J Balvin's energetic performance and unique style have helped make "Ayo" a hit with fans around the world. **

It ultimately depends on personal preference and what you would use more often. If you find yourself needing a pen frequently, then a pen would be the more practical choice. However, if you are someone who frequently loses or misplaces keys, then a keychain might be the more useful option. Both items can be functional and stylish accessories, so it's really a matter of what you would get the most use out of. **

Both San Francisco and San Diego have their own unique charm and appeal. San Francisco is known for its iconic landmarks such as the Golden Gate Bridge and Alcatraz, as well as its vibrant arts and culture scene. On the other hand, San Diego boasts beautiful beaches, a laid-back atmosphere, and a world-renowned zoo. Ultimately, the choice between the two cities depends on personal preferences, whether it's the bustling city life of San Francisco or the relaxed beach vibes of San Diego. **

Without further information or context, it is difficult to determine if the keychain is broken. If you can provide more details about the issue with the keychain, such as a description of the damage or malfunction, I would be happy to help assess the situation. **

In anime, the terms Onii-san and Onii-chan are used to refer to an older brother, while Onee-san and Onee-chan are used to refer to an older sister. These terms are used to show respect and affection towards older siblings and are commonly used in Japanese culture. The specific term used depends on the gender of the speaker and the gender of the sibling being referred to. These terms are often used to show the close bond and familial relationships between characters in anime. **

The short story "Das Ei" by Wolfgang Borchert is about a man who finds an egg on the street and becomes obsessed with the idea of protecting it. He goes to great lengths to keep the egg safe, even at the expense of his own well-being. The story explores themes of isolation, desperation, and the human need for connection and purpose. Ultimately, the man's fixation on the egg serves as a metaphor for the fragility of life and the lengths people will go to in order to find meaning and purpose. **

The volume of a Ü-Ei, which is a popular German chocolate egg with a toy inside, can vary depending on the specific product. On average, a standard Ü-Ei has a volume of around 20-25 milliliters. The size of the toy inside the egg also contributes to the overall volume of the Ü-Ei. **

A car keychain is a small decorative item that is attached to a set of car keys. It is often used to personalize and accessorize the keys, and can come in various designs, shapes, and materials. Some keychains may also have additional functions, such as a mini flashlight or a bottle opener. Overall, a car keychain serves as a practical and stylish way to keep track of and identify one's car keys. **