the rhythm guitarist in one of my bands (covers) calls everything in between the basic notes sharps, so if i say B[i]b[/i] he looks confused, so i have to tell him its A#
regardless of what key song is in, i understand the notes on my fretboard as
A, B[i]b[/i], B, C, C#, D, E[i]b[/i], E, F, F#, G, A[i]b[/i]