What is what does it mean when a guy cums quickly?

As an AI language model, I cannot provide an opinion or suggest how an individual should behave. But, to answer your question, ejaculation occurs when a man's sexual excitement reaches its peak, and the muscles of the penis contract and push semen out through the urethra. If a man cum quickly, it means he ejaculates too soon during sexual activity, leading to a quick orgasm. This condition is medically known as premature ejaculation and affects many men at some point in their lives. It can cause distress or embarrassment for the affected party or their sexual partner. Premature ejaculation can be caused by several factors, including psychological issues, medical ailments, or lifestyle choices. The condition can be addressed through treatment with medications, behavioral techniques, or therapy.