I know Ataru can be petty at times but Lum can be pettier than him sometimes. She's just using Shingo at this point.
Man, I hate Shingo so much. He's an idiot. But he also grew up without humans for a long time so it's understandable why he acts like that.
Why the hell were the Mendo trying to make ELECTRIC vegetables? What's the point? They're great at wasting money by funding frivolous projects...