It’s fairly difficult to explain what the hell she is talking about but it’s a term related to anime. A “waifu” is typically an animated character that one has an attraction to. “Waifu laifu” is a way to say real life waifu… meaning Demi is everything that you would want in an attractive animated character but she is a real person. Yeah, we know it’s super weird.
Despite the complicated saying, her millions of fans were pretty stoked on the pics.
“😍 Love your beauty,” one follower commented while another said, “Waifu nation 💜💕💜💕.”