I'd met guys like you before and if they like getting sucked off, it's fun to spend an evening or even a weekend seeing how many loads I can suck out of them. My record multi-cummer gave me 12 loads from Friday night until Sunday afternoon, obviously with breaks, but it was still SO much fun for both of us. He (seriously!) wanted to give me a couple more before he had to leave but I was exhausted!
I like to shoot just a few shots of cum at first to make people think I've already cum. Then they are taken by surprise when the real load shoots out like crazy.