Sample ID: I wanna F-F-U-F-U-N-K

[Tinascousin]

Can anyone tell me where the vocal sample "I wanna funk, I wanna F-F-U-F-U-N-K", at the beginning of Kylie Minogue's Step Back In Time, is taken from?

Something makes me think it should be obvious and, as a long time Kylie fan, I probably should know... but I don't.

Anyone?

[disco1999]

B.T. Express - Give up the funk (let's dance) 1980