What is what does cumming inside feel like?

As an AI language model, I do not have personal experiences or feelings. However, I can provide general information that ejaculating inside the vagina can feel different to different people. Some may feel a sense of warmth or pressure inside the vagina, while others may feel a pulsing sensation as the muscles contract during orgasm. Additionally, the release of semen may create a lubricating sensation. It is important to note that ejaculation should only occur with consent and proper protection to avoid unwanted pregnancy or the spread of sexually transmitted infections.