"I would rather ask a dumb question than make a dumb mistake"
Enough said!
You should always use the search button first bro, but I would rather someone ask a question then to just do it and find out the hard way. Chances are very slim you will die, but you will definately think you are going to. I have never done it, just remember to aspirate every time. Unless you inject alot of gear in a vein, you will just be really uncomfortable and paniced for a while!