headbanging

noun

1. (uncountable)A type of dance associated with hard rock or heavy metal music, in which the head is shaken violently in time with music.
2. (uncountable)The motion of striking one's head against a surface, a common stereotypy.

verb

1. (form-of, gerund, participle, present)present participle and gerund of headbang

adj

1. (not-comparable)Extremely frustrating.

   “Any work of art/propaganda is surely permitted to lie. But Stone's overreachings in JFK are head-banging. How did he get this thing past the Script Dept.?”