We were somewhere around Barstow, on the edge of the desert, when the
drugs began to take hold. I remember "GB"
saying something like:

So is Grimly Curmudgeon. Either Grim Curmudgeon or Grimly
Curmudgeonly, please. But congratulations on the good role-playing.

And you'd be wrong.
Next!

You mean it's not role-playing and you are normally like this? Poor you!

You seem to have missed the point. Your grammatical attack was a
misfire, a dud, as we have entered the realm of Proper Names and normal
rules do not apply. I can call myself anything I like.

As for being a real curmudgeonly grimster, you don't know the half of
it. Count yourself lucky.