Spanish term technically meaning "I will shit on anything", but is often used as a response to describe ones anger or anxiety towards something annoying or unbelievable
Me cago en na'!!! I justfinished shooting him in the head and he still killed me. WTF!
The first four notes of Beethoven's Fifth symphony, which are particularly memorable and ominous sounding. Used to indicate potential doom and disaster.
"That guy you just pissed off is a hitman for the mafia. Ta na na naa..."
"Hey, did you hear the world was about to end? Ta na na naa..."