Context: one of my players had recently killed an npc, and now her character is meeting his (the dead npc) father

Wizard: Oh shit it’s the father what do I do

Me (DM): I dunno man, what do y o u want to do?

Wizard (OOC): How ‘bout I kill him too?

Me: [wizard] no

Wizard (OOC): Like father like son!

Me: [.wizard] n o