That wouldn't be it amos.
'C' in that context is pronounced as a hard 'c' or 'k'.
'S' in 'Sir' is pronounced 's' as in 'snake'.
I'm sorry to have to once again give you a lesson in English, but somebody has to do so.
So, not only would RHLMcG have to spell it incorrectly, he'd have to pronounce it incorrectly. No, that wouldn't be it.