John looked at Carrie, or at least the cartoon roo version of her. He had to admit, she did look cute and just a bit sexy. John grinned, "OK, I'll take a ride. Err...how do I get in?"
Carrie jumped up and down for joy, her tail and plump sides jiggling toonishly. "Yay!" John took his shoes off while Carrie opened her pouch very wide for him. He stuck a foot tentatively inside and down, the further down his foot went the more resistance he felt until he could press down no further. Carefully, he put the other foot and the rest of him. He sank down till the pouch lip met the bottom of his stomach. "Oh, we're going to have a good ride, I think!" Carrie patted John on the shoulder. He was quite snug, the pouch hugged him close, he could feel Carrie warmth. It was rather intoxicating.
Carrie started hopping, not quite used to her new form. After a couple of test hops, she started getting the hang of it and then began to hop higher, faster and further. The costume owner waved as Carrie hopped away with John snug in her pouch.