Does anyone know a good way to avoid cumming to fast?
And I'm not talking about those bullshit herbal pills.

Well, I can control it pretty well before penetration, but once it happens,I can only last a couple of minutes.

see your doctor before taking a medication.  

These medications may also allow you to keep going after an orgasm.  Does a blow job or intercourse feel any better before an orgasm than after one?  You may not get a second orgasm, but it sure can be fun trying.

Other options are to use thicker condoms, or double up on condoms to decrease sensitivity.

Another option is to pace things to avoid getting too excited.  Maybe start with a blow job, but instead of heading to intercourse, slow it down and do some DATY, or kissing and let things settle a little, then ramp back up to intercourse later in the session.

Best of luck and happy hobbying!

by avoiding the stimultation.

However, there are more ways than that.

One is to learn how to program yourself to hold back.  The technique involves masturbating until you are about to come, then stop and sense how your body feels at that moment and let yourself unwind a bit.  Then start up again and repeat.

After doing this a number of times you learn to watch for the signs that you are approaching the point of no return and learn how to step back in order to prolong the experience.

I'm by no means an expert (this is something I'd like to learn as well) but,

I've found that switching positions when I sense I'm approaching the point of no return helps. Have her switch to on top, etc.

I've also heard that yoga helps, along with some tantric excercises. I have no experience with those though.

Doubling up on condoms is a bad idea though.