“Out of character”, this is when the characterization done in fandom work (mostly fanfiction) doesn’t correspond with the anime without good reason. For example, a Yugi, who goes out and betrays all his friends out of hate, would be very OOC.
Is very sweet and shamelessly romantic, hence the name.
Stands for “Plot? What Plot?”, this usually refers to hentai/yaoi/yuri fics that have no purpose other than to get the characters in bed with each other.
From the verb ‘semeru’, attack; the term used for the more aggressive one in a shonen-ai/yaoi pairing, the seme is almost always taller than the uke.
From the verb ‘ukeru’, receive; this refers to the more submissive one in a shonen-ai/yaoi pairing.
“Warm and fuzzy feelings”, is synonymous with fluff.