"babas" (pronunciation bah-bah-s) has no special meaning: it is a word invented by a small group of chess-friends to define themselves.
"Babas", according to the context, denotes a person who:
- enjoys playing chess very much even if he/she is not a strong chess player;
- cannot stand a zeitnot and often loses against weaker opponents in fast games;
- in spite of having diligently studied the opening theory, loses against opponents who move pawns almost randomly
I am a Babas and I think thats why I enjoy chess.com so much.