[timarie]

That's part of what makes having a full size mirror on your dresser soooo convenient! lol. The trick had been getting myself elevated enough to get my entire rear profile to fit in the mirror.

Well... See the attached thumbnail.

Lucky! I wish I had a full sized mirror on my dresser, lol.

Anyways, there are more than just the two butt shapes mentioned so far. Here is something to look off of:

   

To be straight with you, looking at the photo from the side profile and from the back, you look like you have something along the lines of a squircle (may be what Tibetan meant when she said a combo of bubble/heart?). Which, I will add, is a nice butt shape and certainly better than most, especially since you have not been working out!! Also, especially considering your biological makeup. Most men have square shaped butts or "V" shaped butts. Yours is quite a bit more rounded than the average male derriere. Heck, quite a lot of women even have square and "V" shaped butts! You have a good bit of "meat" back there, a little "cheeky" going on, and you have a lot to work with. You said that you plan on working out soon, right? This will round out your bottom even more from the back view (if that is what you want), and any glute exercises will round out and lift your butt even more from the side view. And anytime you add mass to your backside, the "cheekier" it will get. You have a quite a cute, soft, non-masculine-looking butt... as Tibetan said, really quite nice!