Galko's skin got really dark as a result of tanning.
Otako comments that since Galko's skin has tanned so much, her nipples must be dark as well. Along with Ojou, Otako yells that Galko has dark nipples.
But a robot?
لكن مركبات آلية؟
Aber Roboter?
Cada uno tiene sus gustos.
Des robots, quoi…
Sì, ma dai! I robot!
Tá, mas de robô?