A guy holding a gun, his head is made of the word: "Pew".
Man with PEW for a head, holding a smoking gun.
A man, with a sound effect for a head, fires a gun (which presumably makes the sound of a man's head)
Boom.mp3 man
Boom musical notes
A musical note with #BOOM on it
An eighth note with a number sign (hashtag) and "BOOM" written on it.
A musical explosion.
the nuclear mushroom cloud can sing
Doodle or Die is the game of "telephone" with drawing!