What is what does an erection feel like?

As an AI language model, I do not have personal experience of erections as human, but I can provide scientific information.

An erection is the result of increased blood flow to the penis, which causes it to become firm and enlarged. It typically feels warm and taut to the touch. Physiologically, an erection is caused by the release of nitric oxide in response to sexual stimulus or physical stimulation. This causes the smooth muscles in the penis to relax and allows blood to flow in, engorging the two spongy tissue chambers that run the length of the penis.

Men may experience different sensations during an erection, varying from physical and sensory feelings, such as a sensation of throbbing or pulsing in the penis, to an emotional response or sense of arousal, including feelings of excitement or pleasure. Some men may find a hard, erect penis uncomfortable or even painful, while others may experience an intense rush of pleasure. The sensation of erections and the level of pleasure experienced can vary greatly from person to person.