Who sang the song with these words

[jcfidler]

i'll be your substitute

[delboy3]

Clout

[paddywak]

several versions but the two that come to mind are by Gloria Gaynor and Clout

[factor-fiction]

Is this question in a current quiz, 'cos it's been asked about 5 times recently.
I wonder why more people don't use the 'check similar posted questions' facility when posting questions