I just let my brother go down on me so he could "practice" for his gf (we had never done anything i****tuous before and we're not even that close). I'm 18 and he's 20. He DEFINITELY did not need to practice...as he made me cum in about 4 minutes. I think the whole taboo nature of it is what got me off SO fast. Like "omfg...my brother is eating my pussy!!!!?". This is why you don't get drunk with siblings lol...wtf.
-Andrea