One-night stand is understood as a single sexual encounter between two people with no expectations from either side for any long term commitment. Having one-night stands is an individual decision and personal choice. While for some it might be morally wrong but for others it might be experimentation. However, if you are experimenting with random sex, certain precautions can work for your own good. Use condom as this can protect you from pregnancy and STDs. Do not use any other contraceptive methods as it may avert pregnancy but not sexual infections.