Imagen cumming inside Rainbow Dash, she from the very start was reluctant to have sex with you. Only because she knew of how much she'll squeal and toss during, imagen her tomboyish voice screaming out for more, harder and in the final pitch when she along with you climaxes. It would be amazing, she would be on the pill so you'd be able to pulsate inside her as much as you want, and she would love the feeling of warm sperm going through her insides. This would of course take place on a calm and lonely hill under a tree, on a picnic blanket all the juices from her tight vagina would dampen, and one would stay inside her all the while you go from fully erect to completely soft. It would be great, and amazingly comfortable, she would then with the last of her braggish personality say something along the line "That's all you got?", while your cum would leak out of her marehood.
Too bad she doesn't exist though.