Your ex-girlfriend turned-small-cow swishes her tail and her head moves around sniffing the floor for grass to chew. You don't pay attention to where she's sniffing, you can only admire your handiwork. You play your hands over her full udder. The soft warm mass is oddly arousing.
The cow comes across the lamp. Doing the bovine thing, she sniffs it and gives it a few licks. But that's enough to bring the genie over and serve his new master, your cowly girlfriend!
You look over in shock as a poof of smoke and the genie stands in front of your ex-girlfriend! "My master, what is your wish?"
Your cow ex-girlfriend wishes for...