“Pumps and a Bump” was the first single off The Funky Headhunter, which represented a departure from Hammer’s previous pop image.[4] The track contains a sample of George Clinton’s 1982 single “Atomic Dog”.[2]

The original music video featured Hammer wearing nothing but a Speedo and dancing suggestively alongside numerous swimsuit-clad women, which resulted in it being banned from MTV as it was considered too graphic.[5] An alternative video was filmed with Hammer fully clothed[6] and featuring an appearance by Deion Sanders, while promoted as representing a remix of the song.

https://en.wikipedia.org/wiki/Pumps_and_a_Bump