"Piggy" uses "nothing can stop me now", a line that recurs in "Ruiner" and "Big Man with a Gun". The frantic drumming on the song's outro is Reznor's only attempt at performing drums on the record, and one of the few "live" drum performances on the album. He had stated that the recording was from him testing the microphone setup in studio, but he liked the sound too much not to include it. It was released as a promotional single in December 1994 and reached the Top 20 on the "Billboard" Modern Rock Tracks chart.