This should basically be used for posts in which a male's penis penetrates a female's anus. For example, the following posts would be tagged under straight_anal:
post #537157 post #302443 post #854061

Whereas, just searching straight anal separately, posts such as these would show up:
post #837455 post #278810 post #92690

Of course, it would just be added to the pictures that the tag applies to, and will not replace the tags straight and anal. Just curious as to what the community would think about adding this tag.

Try m/f anal from_behind -m/m -pegging.

Genjar said:
Try m/f anal from_behind -m/m -pegging.

That is a lot of tags for a six tag limit, and it also includes pictures that aren't straight anal (such as rimming). It's missing quite a few pictures too, like my first and third examples of straight_anal.

(Sorry if I'm coming across a bit picky)

Didn't we rid all those straight, gay, lesbian etc. tags a while ago?

Nah, the sexuality tags were changed to the more descriptive male/male, female/intersex tags etc.

HotUnderTheCollar said:
Didn't we rid all those straight, gay, lesbian etc. tags a while ago?

Yes and they were replaced with gender/gender tags (Because it was too subjective)

anal_penetration duo male/female -sextoy -vaginal works for some cases. (It won't get you orgies nor any vaginal action going with the anal one but i think it was what you were looking for? Given the first three examples)

anal_penetration -male/male male/female -sextoy -vaginal works too. (Not sure if as well as the first one, didn't skim through a lot of pics) (the anal penetration gets rid of most oral tags but leaves open for fisting you could add -fisting but i'd like to leave a spot open in case something more important comes along.)

Peekaboo said:
Nah, the sexuality tags were changed to the more descriptive male/male, female/intersex tags etc.

Yeah that's what I meant to say.

m/f anal -m/m -intersex -ambiguous has a pretty high hit rate, so I'm not sure what this would accomplish besides being comparatively undertagged.