Where do I put the apostrophe....

[MegaLegs]

... in Tim and Sarahs.

For example:

Tomorrow night we are going to dinner at Tim and Sarahs.

Should it be:

Tommorow night we are going to dinner at Tim's and Sarah's

or

Tim and Sarah's

or

Tim and Sarahs'

I realise I need to get a life but I texted this sentence to my sister today and it irked me that I wasn't sure.

I thank you

Tim and Sarah's. Short for Tim and Sarah's house.

I would say Tim and Sarah's.

The third option would indicate that there were two or more Sarahs

LyraSilvertongue is right - I think.

If you put Tim's and Sarah's this would be odd as you would really be saying "Tim's house and Sarah's house" which is clumsy and not correct! (I think)

It would be Tim & Sarah's if anything (def. not Tim & Sarahs') but it's one of those odd ones where it's such informal vernacular anyway there aren't really rules to go by. Except not Sarahs' unless Tim is a polygamist.

(Dodge it the poncy way & say we are going to dinner chez Tim & Sarah.)

Option 2 is correct.

incorrect rather than not correct.

I get very nervous when typing on this of thread!

Good, good Lyra - yes that is how I did it.

I never used to think about stuff like this, it's all Mumsnet's fault (Mumsnet's or Mumsnets' there's only one Mumsnet but I'm talking to the group) .

It's good though.

LOL at the more than one Sarah bit - not only do they have Pampas grass in their front garden they also have a jacuzzi - however, they assure me they are not swingers.

Mumsnet's.

Jacuzzi