Cornell said that "Hands All Over" is about how humans defile the environment, and that "Full on Kevin's Mom" is about "a friend of mine who slept with another friend of mine's mom. The guy who did it said to us, 'Yeah, full on Kevin's mom'." The lyrics of "I Awake" were originally part of a note written by Yamamoto's then girlfriend Kate McDonald. In the late 1990s, an urban legend circulated on internet message boards which stated that Yamamoto, after writing the music, wrote some lyrics on the back side of McDonald's note. When Yamamoto gave the paper containing these lyrics to Cornell, Cornell looked at the wrong side of the sheet and believed McDonald's note was the lyrics to Yamamoto's song. There was less material on the album intended as humorous compared with "Ultramega OK". However, the song "Big Dumb Sex" was written as a parody of glam metal bands, who often metaphorically addressed sexual intercourse in their lyrics. The song, with its many uses of "fuck", was the reason the album gained a Parental Advisory sticker upon release.