Here's how it works: Every time you see one of the following things happen in an episode, call it out (i.e. "Ryan punches someone!"). Then you are safe; everyone else has to drink.
What to watch for:
Luke attacks Ryan.
Ryan attacks Luke.
Ryan and Marissa "accidentally" bump into each other.
Seth name-drops a cool obscure band.
A poodle lands on Sandy's head. (Oh, wait, is that Peter Gallagher's hair?)
Marissa looks confused.
Summer calls Marissa "Coop."
Someone makes fun of a suburb.
Seth plays videogames.
Ryan punches someone.
You wish someone would punch Julie.
Summer wears a bra.
Summer wears a bikini.
Drink Double: Summer appears fully clothed.
We see a random partygoer snort up.
Seth wears a polo shirt
Either Luke or Marissa opens their eyes wide and has their mouth open but is not speaking.
Summer says "Ew".
The episode ends with Ryan staring intensely and wistfully into oblivion.
