While I can fit into a regular, I am very thick and it is horribly uncomfortable. Sex with a condom is subpar in most cases anyway for anyone, but with the wrong size condom, it's much worse. I have to use magnums otherwise sex sucks and it's not supposed to, but not a problem with me, haha also gets some eye-opening looks at me too. I am an unexpected holder of a big cock, only 170cm tall, but I happen to hold a thick and long 21cm x 17cm piece of meat below the belt. And anytime anyone's ever yanked my pants open, I've got a gasp or big eyes as the reaction to what falls out.