1. Dihydrogen monoxide
    It's in everything! OMG!
  2. Any chemical with a "z" or an "x" in the name.
    That's just common sense! OMG!
  3. MSG
    OMG! Because someone said once!
  4. Formaldehyde
    Sweet Jesus, it's used at funeral homes! OMG!
  5. Utonium
    It's a precursor to Chemical X! O. M. G. !