Your former girlfriend turned cowgirl looks at you and shrugs. "I don't want to waste my wishes on you! Genie, I wish to be fat and have the biggest and fullest udder ever!"
The genie looks at the cowgirl and scratches his ear with a paw-finger, thinking for a second. "As you wish, my cowly Mistress." He waves the cigar in the direction of the sexy cowgirl.
You watch transfixed and she lets out a low moo and right before your eyes she starts plumping out. At first it isn't too noticeable, but soon, her sides start to fatten up into soft pudgy rolls. Her udder is the most active though, it swells and balloons with milk. It grows large and weighty. Soon the cowgirl can no longer stand up straight. She flops down on her belly and udder, forcing her to moan pleasantly. Her body keeps porking up. She looks like a butterball of a cow. A ball of fat and taut udder.
She finishes her fat gain and then...