It was quite the rare experience for me. The first time I felt like cumming and I thought I was finished but then I noticed that somehow I didn't feel like I was done. So I kept going and somehow I managed to cum again just a few minutes later. I think I somehow interruped the firt time at just the right moment so there was still some left to do it a second time. I tried to do it again but never managed to do it this good on purpose.