Can females cum from anal only?

Yes, it's possible. I know nobody's going to believe me, but my girlfriend does it regularly. I think I read somewhere that the way a girl's anatomy is, some nerves of the inside of the vagina can be hit through the walls of the anus and that's why. All I know for sure is it does happen. Some guys can too, if you didn't already know.

OP, have a girl do you in the ass and see if she cums from doing anal.

Ass has very sensitive nerve endings. Hence it is normal to orgasm through anal sex alone.

I only orgasm through rough ear sex.

Details?

No way, fappy pants. Try literotica.

Fuck off

Yes, absolutely. Not every woman can, but there absolutely are women who are able to orgasm from just anal penetration with no other stimulation. For almost all women who enjoy anal sex, however, anal + clitoral stimulation can result in orgasms far more intense than clitoral on its own or vaginal + clitoral. Anal is the orgasm multiplier.

some can, most don't.

Yes they do. As "Crusades" say, only from whispering they come: ). This is called Art: )