Tutti Frutti is sung from the perspective of a man who is dating a few different women, many interpret the song as being seggsual and some say the origins were about homosexual seggs and others say it was just about ice cream.
Hound dog is about a promiscuous man, someone who doesn't have "class" Elvis's version is a cover of the song originally sang by Mama Bell, he turned it from a song about a black woman being angry at her promiscuous man, to a white man singing to a literal dog.