This is kind of a dumb question, but it's something I've never heard talked about.

How large is the average male urethra opening, or is it possible for it to get larger because of tearing or something? Im asking this because sometimes when i urinate, I get two different streams, and sometimes it splatters a little. Also around the bottom side of the opening there seams to be some scaring, and it's sort of raised a little.