The competition 'Pick-a-Pig' usually between males, where the object to achieve is to reconvene later accompanied by a new 'friend'. The competitor with the ugliest partner wins.
the night at the local pub when ladies drinks are cheap... aka ladies night, penny pinchin pussy night, the hogline( the line of women outside waiting to get in for cheap liquor.
yo man .. its pick a pig night at shakers, lets go ..