Factual error: Dinky Winks has a branding iron that says 'Dinky' when it faces out, but we should be reading it backwards. When he uses this brand, then it will be backwards.
Factual error: Francis is actually wrong about the lava/magma in Metroid. There is quite a bit of lava above the surface in a few Metroid games. But there was no lava in halo.
Answer: In the 2nd Spy Kids film, when they can read each other's minds, Juni proves it by thinking Carmen's feet stink, at which point she smells her shoe and agrees.