Not the author here, but I'll take a shot at replying: "bear" carries a specific meaning in certain gay communities. Wikipedia says, "It describes a hairier and/or heavy-set gay or bisexual man."
So to interpret the result, the character is a gay person interested in bears (heavy hairy dudes). It's could be a joke, but it could also be a fun way to subvert expectations.
As for presenting it to your players, you could probably start off by saying, "Hey, you might not get to pick your sexual orientation in this game. Is that okay with you?" If so, great! If not, you could change that option to something else or let them reroll.