I want to pee and cum at the same time

I'm 19 and I'm straight. I've been masturbating since I was 15. I used to hate it but now I love it. I used to think cum was the most disgusting thing in the whole universe until I found out that's how we're born. I first cummed when I was 15. I thought I was forcing piss out of my penis but I found out it was cum. I thought it was gross but it made me feel so much better. I've been masturbating ever since. I always masturbate whenever I get a boner. when I cum I wait 10 minutes and then go again. But one thing I've never done is peed and cummed at the same time. My goal since I first cummed is to pee and cum at the same time. I need some tips to pee and cum at the same time.