somebody/something/somewhere or other

something or other

An indeterminate thing; something. Oh, they were talking about something or other, I couldn't quite hear them.
See also: other, something
Farlex Dictionary of Idioms.

something or other

see under or other.
See also: other, something
The American Heritage® Dictionary of Idioms by Christine Ammer.

ˈsomebody/ˈsomething/ˈsomewhere or other

used when you do not think it is necessary to be more exact about somebody/something, or to show that the person/thing/place mentioned does not have much importance or value in your opinion: ‘What did you have for pudding?’ ‘Oh, something or other covered with cream.’ ‘Where’s your pen?’ ‘Oh, I lent it to someone or other at work and they forgot to give it back.’
See also: other, somebody, something, somewhere
Farlex Partner Idioms Dictionary
See also:
  • a thing of the past
  • a/the feel of (something)
  • (I) wouldn't (do something) if I were you
  • (have) got something going (with someone)
  • a straw will show which way the wind blows
  • a crack at (someone or something)
  • all right
  • (you) wanna make something of it?
  • (something) is the new (something)
  • all for the best