I suppose every gag anime that utterly destroys the forth wall needs one of these.
This is not subtle at all. They implied that Tama was gay earlier in the episode, too.
I think I even caught a Captain Harlock reference in the dialogue. This could mean that my Japanese is getting better or that I’m even more of a useless nerd. This episode also had some cute Nagi scenes sprinkled here and there but screencaps wouldn’t do them justice so you’ll just have to watch for yourself.