OK, Kirk is more menacing than disapproving here. But the whole is-he-gonna-slap-her-or-kiss-her look always sizzles. At least it's more honest than patronising "tut-tut" sexual aggression...
At the end of the day, for all their pouting, you know Lana and Joan could sock it to them easy.
They simply choose not to.
Mind you, I think Kirk's dame had better join in or get out before she gets hurt.
Too late, darling.