The funniest parts of Resident Alien to me are whenever Harry is interacting with the two kids because I love any situation where adult characters have to interact with kids like they're their peers and end up getting bested with child logic. "Stamps cost like $30 at most, idiot" made me laugh so hard. I'm not up to this part in my rewatch yet but I'm thinking every single day about the scene where Harry, Max, and Sahar are in the diner having that very "Well you can't throw me in the lava because I have an anti-lava coat on" type argument. Or when Sahar tells Harry she's going to wash his mouth out with soap if he keeps swearing and he goes "good. I love eating soap". The absolute peak of comedy to me.