Is It Proper To Call Your In-Laws 'Brother', 'Sister'?

is the mother living with them or something?
she should call them brother and sister as in "take them as you brothers and sisters" or call the "uncle emeka, aunty dunni"?

If they are older fine, if they are younger she should take them as her younger brothers/sisters or tell them to bugger off!

thats d way it is done o my dear obinrin.

My dear, she's not living with them oh.
She just came visiting.
This one done pass hard core.
We're living in the 21st century, for crying out loud.
I beleive a little civilization should be shown.

its yoruba culture. though culture has been proven not to make sense always! 

new wives are supposed to call even the husband's younger relatives "brother". my co-worker when i was back in naija was complaining one morning about this. Her sister- in-law gave her a lashing because she didnt call a 12 year old "brotha mi". (she's yoruba too but she definitely didnt find it funny).
na wa oh! 

Poor lady. Lemme guess she married into one of those arch-conservative Yoruba families, that still insists on old 'tradition' & some of those so-called customs. Do her husband's parents still live in the village?

Tell her that soon one of her husband's younger brothers, will marry a new wife, and she would be spared some of that wahala. Their attention would then be focused on the new wife. A lot of educated Yoruba families in the cities (not all) don't do all that "brother, sister stuff", anymore, but those who still live in the rural areas do. You can pretty much call your husband's younger ones by name, but just show them some respect. That's all.

@ laudate

thats the only solution oh. when the next iyawo comes bellus shifts!

The best thing is for the people causing the wahala to be cautioned.  No faithful wife deserves that aggravation.

which kin culture. it aint culture when its purpose is to make you do shameful and embarrasing things!

c'mon now, enough is enough. people should know where to draw the line. the yoruba culture sef them too oversabi. everything has to be to the extreme. you will see a grown man acting very immature and foolish yet he'll be expecting you to call him sir or uncle.
or some yeye woman youre not even related to will be forcing you to call her mommy. how many mommy person go come get na? hiss!

Actually, the husband is the one who is supposed to call his siblings to order by letting them know that his wife isn't used to such practices. He needs to approach the issue tactfully by making them realise that such prefixes do not add or detract from their worth as human beings. So why the fuss?

Another thing, the lady can do is to call them the 'brother' or 'sister'  title, that they are clamouring for. It doesn't cost anything & it will buy her some peace. If she still doesn't like the idea, she needs to get her husband to talk to them, quietly & respectfully, about this issue. But on no account, should she turn it into a confrontation. Doing so, will erode the valuable goodwill she needs, in order to make her marriage & her relationship with her in-laws, succeed.

In Yorubaland, a woman doesn't just get married to her husband alone, she is also seen as being married 'into' the family. Blending into a family through marital ties, takes a little bit of give & take and a certain amount of work.

Kai woman don suffer for this world all in the name of marriage.Tell that lousy in law that you can't call anyone younger than you bro or sister that its a taboo in your tribe rather they should call you sister afterall na marry you come marry no be to lick asses.

The thing pass me o,  .Why must anybody clamour for aunty or uncle, honestly, its just BS. I'm in it now too, just that mine still dey a bit fair,atleast she's 2yrs older than i am, though my own brother who is 2yrs older than me, i no dey call am brother, or uncle or what not.

@soulpatrol, lol you got me wrong.(can't imagine calling my own brother's wife aunty- except he marries someone really older than he is ) My sister in law to be ( my fiance's sister) wants the sister/aunty title, which is okay because she's 2 years older than i am. But i have a brother who's the same age as my sis inlaw to be, whom i don't call no brother sh*t. On a gd day, you don't go about calling 2/3 years older peeps bro/uncle or sis/aunty, just this inlaw wahala of a thg.

Thats the point, noone needs to clamour for it, if you deserve it, you'll earn it. And you aren't given, it doesnt change a thing bout yourself,once you make yourself respectable, you'll surely be respected (aunty or no aunty)  respect is reciprocal.

kai. she has suffered o.  but then again, like i said, better not act like a mumu and kiss ass. the in-laws will so take advantage of you if you let them. just try to be respectful and let them know your boundaries. after-all in most countries, when a woman marries, she pretty much marries his whole family, but there should still be boundaries as to what she can/should tolerate. 
my mamma dey fear say when i marry, i go dey call all my in-laws by name, but thats not the case. i'll give respect where it is appropriate and to whomever i feel deserves it. it has to go both ways too. its pretty much just common sense to gauge who should be called sir/mam, but then again, yoruba too dey do oversabi they'll force you to call your brother-in law that is old enough to be your child BROTHER. shio! 

its a Yoruba thing.