When you look up the definition of "bullethead" in the dictionary, there's a picture of Steven Seagal.    From Wordnik.com.  [The Velvet Hot Tub | Freshest Stories] Reference

Museum which has been caught somewhere for the King, for yonder stiff wearer of a laurel crown, who throws his head back as though he would like to eat the Olympians and take the King for a luncheon into the bargain, is Straton, the denier of the gods, and the little man with the bullethead is the grammarian Zoilus. ".    From Wordnik.com.  [Complete Project Gutenberg Georg Ebers Works] Reference

Larry Eugene North looks like a complete bullethead.    From Wordnik.com.  [Think Progress » Man ‘disenchanted with the federal government’ indicted for planting pipe bombs in mailboxes.] Reference

How does that bullethead Eric Balfour keep getting work?.    From Wordnik.com.  ['24': Guess who's coming back this season? | EW.com] Reference

Anvilhead …. your name should be changed to bullethead.    From Wordnik.com.  [Think Progress » VIDEO: Powell Says U.S. Went Into Iraq Without Enough Troops] Reference

“Enter,” said Morton; and the round bullethead of Cuddie.    From Wordnik.com.  [Old Mortality] Reference

He was square and efficient, with a solid bullethead and an insignificant, almost comical face.    From Wordnik.com.  [The Fashion in Shrouds]

But the idea that a single bullethead named Madoff could perpetrate this crime -- now, that I don't believe.    From Wordnik.com.  [SeekingAlpha.com: Home Page] Reference

That ugly pitted bullethead.    From Wordnik.com.  [Ecstatic Days » 2010 » April] Reference

Could one bullethead have caused all that damage?.    From Wordnik.com.  [SeekingAlpha.com: Home Page] Reference