It’s about wanting to be something/someone else.
Anything you want, pony, chair, cum, latex suit!
Just imagine being able to turn into a pony/your oc. Your whole body becoming warm as you become incredibly aroused as you play with yourself. Completely focused on your cock as your body slowly morphs and changes into that cute little pony you know you want to be. Ending with a huge orgasm, as you shoot out your massive load the last little bit of your old self goes away~