"Hmmm, I tried the cow vial earlier, now I think you should get too as well" Mary then walked back to the case to find the apparently half-full cow vial. When she picked it up it seemed it had refilled itself somehow.
She then strode back to Jess and after a bit of a struggle and persed lips she managed to force half of it down Jess's throut. "There you go, dont worry you will enjoy it".
As Mary finished her words Jess's belly started to grow out as her udder started to form.