An earwig!
Because if you can't Helium or Curium, you Barium. (Heard it from Heimerdinger, League of Legends)
He heard Obi-Wan in his head saying Out, I shall let myself.
Liberty
Naval oranges. I'msosorry.
Ear we go!
Because they are always earwigging their conversations!
Because he didn't want toupee.