Don't be hasty, though, you might enjoy one of the tens of thousands of names non-Catholics have come up with. You might, for example, enjoy calling yourself an Emerging Homo or a Nondenominational Evangelical Fundamentalist more than you would enjoy pretending to be a Catholic.
But why stop with calling yourself something someone else already uses? Start your own church with a nice new name and maybe you can get enough followers to have your own mega church one of these days.
Something like, "Conservative Evangelical Pentecostal Self Interpreting Contraceptors", would probably draw a crowd so take you time and consider all the possibilities before you bother with pretending to be Catholic.
CEPSC? Nah, to start a church, you gotta have a snappy name, not something that sounds like a wino clearing his throat.