If you have seen "shama" used in ways similar to the honorific "sama," it is a "baby-talk" variation of "sama," used often in anime/manga when the speaker is pretending to act like a little child.
Standard talk:
Akira-sama wa watashi no akogare desu. (Akira is my dream (guy).)
Baby-talk:
Akira-
shama wa
watachi no akogare
dechu.
Please note that little kids
don't actually talk like that!