Related:

• He's a protocol or two shy of a stack
• The two bits of protoplasm could remember when they were cell-mates.
• flag n. [very common] A variable or quantity that can take on one of two value
  a bit, particularly one that is used to indicate one of two outcomes or is used to control which of two things is to be done....
• flag: n. A variable or quantity that can take on one of two value
  a bit, particularly one that is used to indicate one of two outcomes or is used to control which of two things is to be done....
• Double Bucky, you're the one, You make my keyboard so much fun, Double Bucky, an additional bit or two, (Vo-vo-de-o) Control and meta, side by side, Augmented ASCII, 9 bits wide!
  Double Bucky, a half a thousand glyphs, plus a few!...
• A burger shy of a Happy Meal.
• ASK ME I'm shy
• Once bitten, twice shy
• My two favorite letters in the word Bush are BS.