What did/do you call your parents' friends and your friends' parents?

[Rufus T. Firefly]

Growing up, my we always addressed our parents' friends and our friends' parents as "Mr. ___" or "Mrs. ___" (insert obligatory joke about how to pronounce "___" here). This custom seems to have fallen by the wayside; our daughter, for example, calls most of our friends by their first names -- with our and their approval. But my boss, who's pretty conservative, has taught her kids to address her friends by the honorifics Mr. or Mrs. And I have friends who split the difference by using Mr. or Ms. plus a first name, e.g. "Mr. Dave." Then there's the whole thing about calling friends of the family Uncle or Auntie, which seems to be reserved for good friends in the US but seems used much more liberally in Asia.

So how does/did it work for you?

edit: This was supposed to be a poll, but I screwed up.

[CrONoS]

I alway called up by their fist name, but you have to be very polite. Saying their first name in a very polite "tone".

[Snotty]

first name unless I cant rtemember it (quite likely) in which case it is mrs _____. Same deal with my gardening clients and they dont seem concerned enough to correct me

[Adagio]

I'm glad we don't have this problem in Denmark, everybody calls everybody by their first names. I would be insulted if someone calls me Mr.

[Starchild]

Very close friends of my parents got called Uncle and Aunt. First names for other friends.

For parents of friends, I sometimes fall into the habit of "Hello X's Mum/Dad" or sometimes engage in such verbal sumersaults to avoid having to figure out what's polite and acceptable.

[Dauphin]

For parents of friends, often used Mr and Mrs followed by the first letter of the surname. e.g Mr or Mrs K. Else used their first name if it felt more appropriate.

[Rufus T. Firefly]

It'll be interesting to see if this varies when by region; the uS is still asleep.

[Lul Thyme]

Most of the time, I wouldn't call them, specially when I was younger.
This may sound funny, but you'd be surprised how much you can discuss with someone without having to actually adress them.

If I knew them a bit more, I would call them by first name.

[Terra Nullius]

Parents' friends: First name

Friends' parents: Mr/Mrs _____

[Jon Miller]

"Hey dude"

JM

[DaShi]

I wasn't allowed to talk to my parents' friends.