ˈso-and-so BrE AmE noun
1 . [uncountable] used to refer to a particular person or thing when you do not give a specific name ⇨ such and such :
I’d find myself thinking, ‘I wonder what so-and-so is doing?’
2 . [countable] a very unpleasant or unreasonable person – used when you want to avoid using a swear word:
Peter can be a real so-and-so at times.