PULP singer Jarvis Cocker is championing swearing in song lyrics because he believes, when done correctly, turning the air blue is "big and clever". Cocker, 42, is convinced cursing is sign of an intelligent mind, and has littered his latest song with expletives in a bid to give his message the necessary impact. He says, "There's a lot of swearing in (our) lyrics. One song is called C**TS ARE STILL RUNNING THE WORLD. "I hate it when people say swearing is the sign of a limited vocabulary. If you use a swear word well, it is big and clever."