Power Bottom

One of my closest friends is gay and he mentioned a term that I had never heard of before, a "Power Bottom".

Below is the definition that urban dictionary provides.

power bottom

Gay Male Term. Dominant Bottom. While a bottom is usually submissive to his partner, a power bottom enjoys maintaining control over the top and/or the penetration, the normally dominant role in gay male sex. Power bottoms supposedly have skilled tongues. (They give the best blow jobs fellatio and rim jobs analingus.)

Ex: Rob is a skilled power bottom in bed.

I was very interested in this because my friend was telling me about his sex life, and how he is always pure top, but wants nothing more than to be a power bottom.
He said that being a power bottom meant alot on the emotional side of sex, that power bottom is so strong and confident that they are allowing someone to do that. It takes alot of trust and my friend said he can't wait till he meets someone that he wants to open up to and trust that much.

I just found this very interesting, it's a place you take during intercourse, but it is so much more than that. 

Here is a link with more info.
http://www.musedmagonline.com/2012/07/the-miseducation-of-the-power-bottom/