DAI
Dead Approach Invitation. Opening on an AI that turns sour and creates an Anti-AI response from the HB. Different than a crash & burn on a cold approach because it involves taking advantage of positive signals you detected from a chick. DAIs are rare if you know how to detect AIs properly.

DDB
"Doggy Dinner Bowl" [Look] - The look on a chick's face when she's tranced out or lapping up your words with a phased out look in their eyes. In that state, they are metaphorically ready to eat out of the palm of your hand.

DHV
Display High Value (action/verb) or Display(s) of High(er) Value. An action or story which increases your perceived value. Can be used positively or negatively depending on your perceived value prior to the DHV and whether the chick is Lower Value (you increase hers or reduce yours, preferably increase hers) or Higher Value (you increase yours or reduce hers, preferably increase yours).