Emet-Selch could not care much less about what the people around them think. He's antagonizing Hythlodaeus purely for his own benefit, grunting softly as he's tugged rather harshly into that kiss. Okay, maybe his hair being pulled is a little much, but the electricity that runs between their mouths as Hythlodaeus tries to make a point (that he really does not need to make) is intoxicating and addictive.

"Hmm, yes, that's a decent reminder." He says, once they eventually break apart again. He has no idea what's gotten into Hythlodaeus but ... he is kind of liking it.