Track 2 on Primal Scream's seminal album for Creation from 1991, Screamadelica. Sort of a trippy, groovy deranged samba.
It's a reworking of the song of the same name written and recorded by Roky Erickson and Tommy Hall as Thirteeth Floor Elevators from the album Easter Everywhere. The Scream condense Roky's 14 verses of psychedelia into a more manageable 4, and sing "trip" for "slip".