1. During an an ejaculation, should all cum shoot right out into the air? Because with me it does that once then the rest goes over the penis..
That's fine and in fact, most guys don't shoot, they just dribble.
2. How long should it take for all the cum to come out? I mean theres sorta the main part of the ejaculation, but then about 5 minutes later, I can be at the toilet "cleaning up" and a little more will come out, is this wrong or right?
Oh yeah that's fine too. You should get most of it out in about 10 sec, that's how long our orgasms are ;P
If a little bit more comes out, it's just a little bit that didn't get out. Nothing to worry about, this usually gets pushed out into the foreskin or released the next time you pee.