He always buttered up his boss to the mouth before asking for a raise.
Он всегда льстил своему боссу, чтобы получить повышение.
Definitions
The phrase 'butter (someone) up to the mouth' is not a standard idiom in English. However, 'butter someone up' means to flatter someone excessively, usually to gain favor. The addition of 'to the mouth' is unusual and may imply flattering someone right before they speak or act, but this is not a recognized phrase. It could be a misheard or altered version of 'butter someone up.'
