I came across the out of character tag, and noticed that it's applied to a number of posts where lesbian characters are engaging in heterosexual sex. Checking tag histories, though the tag is somewhat infrequently used, this is not a single-user vendetta and seems to go back at least a few years.
Which makes me wonder: is this a proper use of the tag? And is it proper in all cases?
Question one - should it be limited to apparently consensual sex? post #3677152 and post #3561926, for example, are very likely nonconsensual, though I suppose it can't be proven (the posts are still tagged rape though.) A person getting raped by someone they'd never be attracted to doesn't make the situation out of character.
Question two - how well established does a character's sexuality need to be to make fanart that goes against that "out of character" for them? I don't want to open any cans of worms by arguing that the sexuality of the characters currently in the tag is subjective, so instead let's try flipping things around...
Dizzy is married to Ky Kiske. I think most people would assume that she's heterosexual and monogamous based on this.
Should we tag all the posts with the tag combination dizzy_(guilty_gear) yuri as "out of character?"
Should we tag posts of her having sex with men other than Ky as as "out of character?"
If not, why should we do it for Akaza Akane, or Yoshida Yuuko?
In summary, this is a big mess, and if nothing else I think it's going to be inordinately difficult to comprehensively tag sex acts as "out of character" based on the sexuality of the characters involved. I would like to suggest restricting the use of this tag to non-sexual art, or if we can find a definition that isolates them, maybe very OOC images like post #288613 (where the issue is not just "lesbians having sex with men" but "upper-class girls at an elite Catholic private school engaging in an orgy.")