I have a problem and I would like to know what can be done to fix it.

To be blunt, I have boobs. Its not roid-related as I have never taken a cycle, it is more fat related I am guessing.

I am 21, 5'6 with around 25% bodyfat. Most people that see me think im a slim guy as I really dont appear to be chunky or anything but I have a decent gut and these damned boobs. The boobs are killing me and its extremely embarassing for me as a man. I have had them ever since childhood and I think its time to change what I dont like about myself. Its a bit late, but better late then never

What I want to know is, what do i do to get rid of them? A guy at the gym today told me it was probably baby fat but baby fat at 21? I have never done any sports or anything as a child as I was always indoors so I guess this can be it...

What is your advice for someone in my shoes? I am just unsure how to tackle this problem as I dont know if what I need is weights (especially chest workouts) or cardio, or both. I know a good diet is needed and I am researching on that as well trying to come up with one.

Feel free to tell me what you think.

Thanks