The "Slip Of The Tongue Tour" was a concert tour by the British rock band Whitesnake, promoting their 1989 album, Slip of the Tongue. The tour featured performances across North America and Europe, showcasing the band's signature hard rock sound and powerful ballads. The tour included notable songs like "Fool for Your Loving" and "The Deeper the Love," highlighting the band's lineup changes, including the addition of guitarist Steve Vai. The tour was well-received, contributing to the band's popularity during the late 1980s and early 1990s.