This is one of the most famous songs with prominent stutter, as Randy Bachman sings, "B-b-b-baby, you just ain't seen n-n-nothin' yet."

Bachman wasn't planning to release the song with the stuttering vocal. He sang it with the stutter to poke fun at his brother Gary, who had a speech impediment.

During microphone checks, he would sing it with the stutter and recorded a version that was intended just for Gary. His record company liked it a lot better than the non-stuttering version, so that's the one they released.

Eventually, Gary stopped stuttering.

The lyrics, especially "She took me to her doctor and he told me of a cure," led to rumors that the song was about herpes or some other social disease.

According to Bachman, the lyrics are just words he improvised, as he didn't thing the song was going to be released and was just using it to test levels in the studio.

Randy Bachman produced the Not Fragile album and used this song to test dynamics in the studio, since the guitars would go from quiet to loud.

When the band recorded it, they didn't think it would be released, so they didn't bother perfecting it - or even tuning their instruments. Bachman's vocal was considered a scratch track. This became Bachman's "work song" for testing.

The band only played it for their label after the boss at Mercury, Charlie Fach, heard the eight songs they completed and didn't hear a hit. The engineer suggested playing him the "work song," and Bachman reluctantly agreed.

When Fach heard the song, he loved it, warts and all. In a Songfacts interview with Bachman, he explained: "Charlie said, 'I want to put this on the album.' And I said, 'I need to remix it.' And he said, 'Don't touch it. Put it on the way it is. When you play this with the other songs, it just jumps off the turntable.'"

The title is grammatically incorrect. It is a double-negative, although "You Haven't Seen Anything Yet" wouldn't have the same ring to it.
This song came about when the band was playing a jam session in the key of "A." "Takin' Care Of Business" also came out of a jam session, but that one was in the key of "C."

Randy Bachman wrote this song and sang lead. He and his bandmate Fred Turner split vocal duties in the band.

Bachman's inspiration for the intro/verse melody was Dave Mason's "Only You Know and I Know."

Stephen King referenced "You Ain't Seen Nothing Yet" in the short story "Big Driver" from his 2010 collection, Full Dark, No Stars, when the protagonist hears the tune blasting from a car.

King has another connection to the band. Early in his career, his publisher only allowed him to release one book a year, so he bypassed the rule by coming up with a pen name: Richard Bachman, inspired by the Richard Stark novel on his desk and the Bachman-Turner Overdrive album in his record player.