Twilight looked at the penis. Her penis.

The spell had done its work, all right. She’d been skeptical at first, but there, lying between her legs, was an honest-to-goodness stallionhood…although it was larger than any stallionhood she’d ever seen before, almost reaching the length and width of one of her legs.

She squeezed her legs closer together - not too much, just a few inches - and shivered in pleasure as she felt her newly grown testicles throb in response. They sat beneath her new cock, propping it up into the air with the tip starting to drip with pre, their own depths churning and roiling. With her leg muscles touching her new balls, Twilight could almost feel the cum sloshing inside, waiting to be spilt.

Her massive cock started to rise into the air, its veins throbbing and the head flaring wide. Twilight bit her lip, and - slowly, gently - placed her hoof on the tip.