An "outtie" typically refers to a protruding navel or belly button. It is the opposite of an "innie," where the belly button is concave or inward. Some people have outties due to the way their umbilical cord was cut or based on their genetics.

Sexiness is subjective and personal preference varies among individuals. Some may find innies (navel indentation) sexier, while others may find outies (navel protrusion) sexier. It ultimately depends on individual taste and preference.

Who has a navel that is acceptable for piercing? Well ultimately the best bet is to see your local professional body piercer, they can look at your navel and tell you if it's going to be an issue or not. Excessive weight can cause the tissue to be misplaced due to tissue rolling, this will make placing the piercing in the right place a real problem. But without seeing what you have to work with it is really hard to guild you down the right path. So see your local professional body piercer for assistance.