Consist in exposing your reasonably erected penis to your potential date in order to create a moment of decision.
This technic is mostly used as a "nothing to lose" move.
The concept became popular in HongKong in the passed few years before spreading more widely in SouthEast Asia.
"I was at home with this girl I dated for the first time but the ambiance wasn't sexual enough... I instantly used the Extraction to break the ice"