The most sensitive part of the male body to pain is the tip of the penis. This area is densely packed with nerve endings, making it highly receptive to pain signals.
However, it's important to note that pain sensitivity can vary greatly from person to person. Factors influencing pain perception include individual thresholds, emotional state, and the nature of the stimulus.
For example, a light touch might be perceived as painful on the penis tip, while a more forceful touch on the back might not be considered painful at all.