"Oh, bless you for actually coming over to help. I don't blame anyone wanting to avoid the big moaning horse girl, stumbling over her words as her vocal cords become increasingly equine. You're just minimum wage workers, and that's no insult, you're just not paid enough to deal with problems shaped like me.
First, if you wouldn't mind, I think I can still feel my wallet over in my left pocket, it hasn't torn off completely yet...yeah, go ahead and grab that, there should be enough money left on my debit card for this, and ID to prove I'm old enough. I look a little different, though. Sorry...this is incredibly embarrassing, asking someone to fish around next to my hairy thigh...I just can't do anything with these stupid hooves.
Second...oh, nah sweetie, I don't think you sell anything that can stop this horse situation. No, actually I was just hoping to buy some...erm...Plan B...don't judge my priorities, I'm not gonna both end up as a horse AND carrying a foal to term. At least not yet...and if you could pop out a couple of those pills and lay them on the counter for me, I'll get 'em with my tongue...don't know how many I'm gonna need..."