It would help if you knew what she thought of as 'porn'. Back in the 60's, yes, playboy was 'porn'. Now it gets sold right next to Car and Driver magazine. But if men's magazines aren't part of your every day stuff that she can see, I wouldn't recommend playboy. Maxim or Stuff should be alright, though. Let your dad see it first and see his reaction; it'll probably be either 'wow, look who's on the cover this month', or 'Oh, Christ, don't let your mother see this', and that'll pretty much give you the best idea of which way to go. I don't think maxim was ever even considered porn, but you never know what she thinks. The sports illustrated swimsuit edition would be a good addition as well. If your mom gets a victoria's secret catalog, borrow that and conveniently leave it in your room (or bathroom if your family uses that as a reading room) right on top or underneath the maxim (or maxim generic equivelent) so that they appear together. Sure, it's easier since they've already dealt with the fact that your brother is gay, but you will need to help them understand that your situation is different.