Echoing Loria - Definitely put thought into it.
Get something that has meaning for YOU. Tattoos are supposed to "paint a picture" of who you are or symbolize a time in your life.
Just a word of advice:
In the future, you WILL sag, whether you are a man or woman. You may want to avoid particular areas.
If you are a woman (or a guy) with long hair and want something you can hide or show as you please, get it on the back of your neck, but I gotta tell you, it will hurt a bit more.