something-something

Short definition from Wiktionary

Noun

1. 1
   Something that has no name or that one would prefer not to name.
2. 2
   Something that has no name or that one would prefer not to name: A snack or morsel of food that does not constitute a meal.
3. 3
   Something that has no name or that one would prefer not to name: Something special such as a gift or extra money.
4. 4
   Something that has no name or that one would prefer not to name: A situation.
5. 5
   Something that has no name or that one would prefer not to name: A sexual encounter.
6. 6
   Something that has no name or that one would prefer not to name: An affair or extramarital sexual partner.
7. 7
   Something that has no name or that one would prefer not to name: Something illegal.
8. 8
   Something that has no name or that one would prefer not to name: A so-and-so.
9. 9
   Alternative form of something-something.

Phrase

1. 1
   Replaces parts of a sentence a speaker either does not know or deems unimportant; blah blah blah.