guguru — corresponds to the (pace Google’s legal department) English verb “to Google”, appears in the title of some new books and magazine articles (sometimes in a variant form, guuguru, which is homophonous with the Japanese pronunciation of “Google” itself, but written differently — the verb has the final ru is in hiragana for the reason given above), and inspired this post.
homoru — that’s the homo of “homosexual”, so the verb means “to be homosexual/engage in homosexual acts [male ones]“. I first encountered this in a book by MURAKAMI Ryuu and puzzled over it for a few seconds, then almost died laughing when I realised what it meant. There’s a corresponding verb for females, too (I checked) — rezuru (from “rezubian“, the Japanese pronunciation), and even a porno movie series called Rezure! — that’s the imperative form!
Addendum. See The Tensor’s post for further details on this.