also referred to as the tipping point of a party. soon after typing point, people start leaving the party for said alternative.
You don't want that to happen at your own party.
Dude: He pal, whats the plan for tonight?
Pal: Hey dude, im meetin some friends later in town. thought you were at that party?
Dude: ya, dont know. typing point was five minutes ago, i think the partys dead pretty soon.
Pal: i told you! alright see you later..