((The story behind this scene is that when they were engaged, Pinkie convinced Cheese to take her to see his parents. Here, she’s trying to make a good first impression on them.
Of course, Mozzarella’s fussy about the kind of ponies that her sons marry, and Pinkie Pie is not her ideal daughter-in-law. As for Hay’s thoughts… well, he’s generally not fond of loud ponies.
Cheese don’t care, Pinkie’s perfect in his eyes.))