Problem is if it's through Philpost, where if you'd get lucky and it was delivered straight to your home (but there's the possibility your parents will get and open it). Or you might have to pick it up at the post office, the package will be opened by the custom guy in front of you, where he might or might not confiscate the item (those mature items are illegal to bring in, are they?) or assess you the P35 fee or whatever he compute up.
My guess if it's from anywhere other than US, you'd better poff not getting them. As for JAC, others might have a better idea as I don't use that service...