Fantasizing alone masturbating!

Not entirely a fantasy scenario but I am recalling when a friend of mine described in detail fucking a girl I had fancied big time. He couldn't believe he actually got to have sex with her. I was jealous as hell but when he enthusiastically gave me a play by play I was extremely turned on by it.
The girl in question looked a lot like a twenty something Kate Bush but with bigger tits.
I had seen her in a bathing suit but Phil described Debbie in bra and panties and his eager but slow removal of them I immediately got hard ( and I could see Phil did too) - at this point I will add a fantasy bit
Didn't happen as he continued describing her body and all the foreplay - playing with her breasts - sucking her nipples - fingering then licking her trimmed pussy - but now I am imagining that we actually took our track pants off and started wanking as he gave more detail. ( Phil's cock is way bigger than mine and I am picturing myself masturbating while watching him fuck her and making her squirm and moan) She looks over at me playing with by tiny penis while he is ramming his huge cock into her.
She gaspingly tells me that now that she sees that the gossip about how pathetic my little penis is true she was right to choose big Phil over me to fuck her.
Phil in actuality did describe in detail with a lot of pride mixed with some wonderment that he was actually screwing her and she was obviously orgasmic. He said she was on her back with her beautiful legs wrapped around him begging him not to stop. ( in my fantasy mind I am adding that she was lauding his magnificent cock and his prowess while pointing out that I could never satisfy her with my baby dick )
- anyway I can't continue with this reality meets fantasy recollection because I just shot my load and I kinda wish I had watched Phil fuck Debbie