hi Pre-cum (also known as pre-ejaculatory fluid, preseminal fluid, or Cowper s fluid) is the clear, colorless, viscous fluid that emits from the urethra of a man s penis when he is sexually aroused. It is similar in composition to semen, but has some significant chemical differences. Among men with certain infectious diseases, pre-ejaculate can often contain disease pathogens. The presence of sperm in the fluid is believed to be rare . however individual cases of a high sperm concentration have been recently published Pre-ejaculate is believed to function as a lubricant and an acid neutralizer. so its possible that u can get HIV from pre cum