“Ah yes these are swelling up nicely. 2 weeks of filling exercises is paying off. How desperate does that cock feel each and every day?”
When you have edged him for a while like this, as in days or longer, he will genuinely have a huge load.
Don’t waste it! Don’t just jerk it off onto his tummy or something. You don’t get to appreciate how much there is.
Do something fun like milk him into a glass, or his own mouth!