Most taboo is one from a long time ago involving my sister. In my early teens, she’s two years older, after a shower I was just wearing a towel and positioned the gap so my cock was visible then went to her room and made up some conversation. Her eyes kept looking down toward my cock and she finally said she could see my “thingy”. I said oops and covered up. The taboo part is wishing I instead replied asking if she want to touch it, which she would do then slowly begin to stroke until I blew my load all over her. Long time ago but still jerk to that.
