First Cock Sucking Experience

My first time cock sucking was when I was 12 maybe 13. One summer I was fooling around with my older brother 15 and his friend. We were alone in the house for the day and daring each other to do 'sexy' things. I was probably a young flaunter with crop tops and short skirts etc. It ended up with me naked and both of them pants down and cocks up. We were feeling each other, me with a cock in each hand (I was dared to hold my brother's cock) and them touching my small boobs. I was then dared to put my brother's cock in my mouth for a minute. I was unsure but did it. It wasn't really a blow job but he came in about 10 seconds. I thought it was yuk and spat it out but I also did it to his friend afterwards. We never had any sex, just rubbing and sucking. It lasted the summer, then we stopped.