"You Oughta Know" is a Grammy-winning song written by Alanis Morissette and Glen Ballard, and produced by Ballard for Morissette's third album Jagged Little Pill (1995). The song, the lyrics of which describe Morissette's fouled relationship with an unnamed lover, introduced her harsh, angst-ridden lyrics to the public.

It reached number one on Billboard magazine's Modern Rock Tracks chart in the U.S. and charted at number four in Australia and number twenty-two in the United Kingdom. Launching Morissette's career (and Jagged Little Pill) to the top, the coarse language, violent revenge scenarios, and piercing vocals were a jolt to mainstream pop music. "You Oughta Know" was not eligible for the U.S. Billboard Hot 100 in 1995 because a retail single was not released, but it reached number thirteen on the Hot 100 Airplay chart and the top ten on the Top 40 Mainstream chart. A live version of the song, recorded at the 1996 Grammy Awards ceremony on February 28, was a B-side on the retail single for "You Learn", and Billboard credited the single's Hot 100 number-six peak position to "You Learn"/"You Oughta Know".

Flea, from the band Red Hot Chili Peppers, played the bass on the song, and former Peppers member Dave Navarro was on the guitar. The single's music video was directed by Nick Egan and features a dimly lit Morissette hitchhiking across a desert. Morissette has reimagined the song numerous times, most recently on her 2005 album Jagged Little Pill Acoustic, which featured mellowed vocals and chord progressions; the lyrics, however, were not softened. It is widely considered Morissette's most recognizable song. (Thanks Wikipedia)