I did this a lot in my teens; with and without my buddies help. Both of us love each other's cum and our own. My wife and i especially love my precut. She not too much into the texture but she does happily swallow
The first time I tasted cum I was sucking my own cock. It wasn't horrible. After ejaculating my desire to eat cum diminishes...completely. If I was that flexible today, I might have a different perspective.