My horny GF begs to please her asshole

I wanted to please her, me and my fairly big piece of meat my big and fat, cock, my pride. I took down my clothes and exposed my dick, it was not yet at full size so my girlfriend wanted to turn me on some more in order to get that cock deep inside her asshole it needed to be stiff it needed to ravage her very being and let her feel that orgasm deep inside her asshole, but there was something odd she want no lube just...