No Vaseline

No Vaseline is a diss-track made by Ice Cube is from his 1991 album Death Certificate. Ice Cube's former bandmates, Eazy-E, Dr. Dre, MC Ren, DJ Yella, and their manager, Jerry Heller, are targeted in the song's lyrics. This song, as well as the 46-second-long "Black Korea" was omitted from the UK edition of Death Certificate.

Background
Ice Cube wrote "I Gotta Say What Up!!!" in response to N.W.A's comments about him on their albums 100 Miles and Runnin' and Ni**az4Life. The song is a scathing indictment of the band and their manager. In the Kill at Will EP, Ice Cube made a brief jab at them, mocking the phrase "hundred miles and running" on "Jackin' for Beats."

Ice Cube speaks harshly of Eazy-E and Heller, criticizing Eazy's decision to align himself with Heller. In the lyric, Ice Cube also mentions his decision to leave Ruthless Records: "When I started my own business, you became envious. But I'm a man, and nobody's humpin' me."

The song Death Certificate is thought to be an act of animosity towards Dr. Dre because it contains numerous disses directed at him. The term "Jew" is censored on the album but not on Death Certificate (the introduction is also removed) According to Suge Knight's lawyer, Ice Cube did not write the song because he was upset with his ex-treatment manager's of him. In the song "Fuck wit Dre Day (and Everybody's Celebratin')" Dr. Dre and Snoop Dogg made fun of Eazy-E. Dr. Dre left the group not long after the release, citing a lack of monetary compensation. As a result, the N.W.A disbanded, and its members went on to pursue solo careers, Eazy-E responded with "Real Muthaphuckkin G's"

In popular culture
The song is featured in the 2015 N.W.A biopic Straight Outta Compton, with Ice Cube (played by his real-life son O'Shea Jackson Jr.) recording it in response to N.W.A's disses. Heller (Paul Giamatti) performs the song for the group, whose members are offended by the various insults. Heller does not appear to be bothered in the dramatization until the references to Heller as a "Jew" and his reactions (or lack thereof) to the insults hurled at the group and Heller help lead to Dr. Dre's split from N.W.A.