Can you find a common thread linking bikinis, mac and cheese, UFOs, fried chicken, jello, and ice cream? You can add in hot fudge sundaes, emojis, hammocks, hot dogs, kissing, and picnics. Wait, there’s more! Avocados, cheesecake, lipstick, and drum roll—Harry Potter’s birthday! Yeppers, each one is celebrated during the month of July. Some for…