[He's always so charmed by the way they imitate him and surprise him... Mettaton's smile brims with his feelings, warmed by the human's charisma reflecting his own. "That's a good pose, darling! It exudes confidence... A spectacular save after being in a sticky situation!"

Mettaton doesn't mind that the flower shared this thought, and moves right along.]

Oooh, or did the sun come out for me? It does wonders to my image. [He sticks out his leg and runs a hand up it, emphasizing the sheen of sun hitting the black metal.] The way it reflects off of my gorgeous metal body's quite a sight to behold... Even the sun itself understands. This is an idol meant to be illuminated!

["And it has a gentle warmth. I can barely feel it, but I like it." Thank you... thank you. Trying to stroke his own ego, here.]