Casual sex means doing "the grown-up hug" without being in a serious relationship with the other person. It's like having a playdate with someone, but instead of playing with toys, you play with each other's bodies.
Sometimes, people just want to have fun without wanting to be boyfriend or girlfriend. They may meet someone they find attractive, and they both agree to have some fun together. They might do things like kiss, cuddle, touch, or sometimes even have sex.
It's important to remember that casual sex requires both people to agree that it's what they want. If someone is not sure or changes their mind, they have the right to say no at any time.
It's also important to practice safe sex by using protection like condoms to prevent unwanted pregnancies or sexually transmitted infections.
Though casual sex may be fun, it's not for everyone, and it's okay to wait until you're ready to have sex with someone who you have a serious relationship with.