A couple of things here. First, it was exciting for him to spray his load like that. This could have been his 1st time with her which is incredibly super explosive for me when I cum on a woman for the 1st time. Secondly, the head of his dick was swollen and very shiny which means, his dick was ready to POP! Usually, a guy is going to explode when your sick is at that point. And last but not least, when you have a 1st timer who is playing the shy role or acting like she doesn't want her face painted, like this young lady but doesn't exactly stop you from shooting/blasting your load all over her, the sensation and pressure build up can cause a heart attack while you hold back your load until you can't any longer and a HUGE EXPLOSION takes place.