I don't want a quick explosion. I want the pleasure to be extended and then shoot a huge load. It happens when my gf gives me a nice slow blow job (she knows how to keep me from coming too quickly) and finally finishes things off by sliding a couple of lubed fingers into me. It happened in a recent MMF when she and I were in a 69 and my buddy was rimming me and I shot a huge load into her mouth
A lot of it depends on the chemistry happening at the time and who else is taking part.