(noun) A theory regarding a mystery. Refers to the practice of
chalkboarding/
whiteboarding ideas and expanding on them.
(verb) To actively
theorize about said mysteries. Often used when someone is coming up with tinfoil theories.
"Man, so men and my friends were chalking about who
Rey's parents might be..."
"Did you hear the chalk about Sylar and Peter
Petrelli?"
"After those first teasers dropped, it was crazy how much chalk was flying around about what was going to happen in season 3 of
Westworld."