Buffing is a Brit term for a really smart guy: A person engaged in scientific or technical research or a person with knowledge or a skill considered to be complex, arcane, and difficult.
“Buffering” — another good autocorrect. It changed “boffin” for me.
Interesting. I had not heard it before. Maybe like what we call a maven or a guru here. I thought it was a funny sounding word.
Buffing??? .... I thought it was Boffin!