Dark (poker)
1) Without looking at your cards. "I'll open dark."
"He made a dark bet."
2) Check without looking; always followed by it. "I'll
dark it" means "I have not looked at my cards and
I shall check" and implies that the speaker is drawing
to a powerhouse (in high draw poker) or to a must-call hand
(in lowball; for example, an 8, but not a must-bet hand) so
you better not try to bluff him, but in actuality usually means
he doesn't want you to bet.