She mostly plays the role of the pampered wife, but she lets the act slip a couple of times. Olly Murs then throws his own spin on the song. Check them both out.
While you're at it you can watch them do a mashup of their songs on The Voice UK as they were both judges.
Olly Murs - Dance With Me Tonight
Meghan Trainor and Olly Murs - Mashup on The Voice UK