Take a sip every time Robin makes up a word, two if its used by someone other than Robin.
Take a drink every time someone references a different DC universe.
Take a drink every time Kid Flash hits on Miss Martian, two if Artemis hits him right afterwards.
Take a drink every time Robin chuckles / lets out his weird giggle-laugh.
Take a drink every time Robin does something sneaky / ninja (like disappearing on everyone.)
Take a drink every time some one in the team says their catch phrase.
Take a drink every time you hear "Hello Megan!"
Take a drink every time Superboy angsts about something.
Take a drink every time Superboy rips his shirt off.
Take a drink every time someone accuses another character of being the mole.
Take a drink every time the number 16 pops up.
Refill the glass every time Aqualad uses a contraction
At the end of the episodes, drink twice whenever it's revealed that what the team did that episode didn't affect the Light's timetable or plans at all. Drink three times if what the team did actually furthered the Light's goals. Works in Season 2 as well (at least until "Summit").
Take a drink every time you hear the word "metahuman". Twice if it's abbreviated as a prefix ("meta").
Take a drink every time you see something that never would have flown past the radar on Cartoon Network.
Take a drink every time Halo suffers a gruesome "death".
Take a drink every time Brion is watching the news from Markovia.
Take a sip every time Brion gets annoyed, upset or angry. Down the drink if this is followed up by him attacking someone or something.
Take a drink every time Wolf is shown sleeping. Drink the whole thing if he ever actually gets back up to do something.
Take a drink every time Forager speaks in the third person.
Take a drink every time Dr. Jace expresses her interest Halo or Brion.
Take two if she refers to them as kids or children.
And finish it off if she refers them as "her" kids.
Take a drink every time you see the offspring of an established superhero, like Lian.
Exception: Do not do this during the episode Home Fires. Your liver will thank you.
Take a drink every time a character uses another character's catchphrase. (i.e., Artemis saying "Hello, Megan!" or Barbara saying something is "crash.")
Take a drink every time someone teleports via Boom Tube.
Take a drink every time Brion or Tara yell "Mother of GOAT!"
Bonus Game: Meta Edition
Drink the pain away every time CN pulls a long and unexpected hiatus on the show.
Note: Only due so if you are insured for liver failure.
Now the show has been cancelled, down the bottle, regardless of drink.
Take a drink if you're watching an episode that preceded a hiatus during the original airing. note "Bereft," "Secrets," "Depths," "Darkest," "True Heroes."
Take a drink if you're watching an episode that was leaked on the internet before its official U.S. premiere date on Cartoon Network.note "Targets" (leaked by Cartoon Network's official website), "Misplaced," "Coldhearted," "Image," "Agendas," "Insecurity," "Performance" (aired in various foreign countries), "Before the Dawn" (leaked by iTunes)
Take a drink whenever someone tweets at Greg Weisman begging him to make a third season.
Take a drink when Greg tweets back "#notuptome"
SPOILER REQUEST. NO COMMENT.
Take a drink whenever someone tweets Greg Weisman to complain about the show ending on a cliffhanger, only for Greg to explain the difference between "cliffhanger" and "open ended."
Take a drink whenever a tumblr user realizes Chris Jones has reblogged them and freaks out.
Take a drink whenever Jason Spisak calls Stephanie Lemelin "babe."
Take a drink whenever someone asks Chris Jones why something happened in the show, and he has to explain that he didn't actually work on the show, he just draws the comic book.
Chug the whole thing if someone actually remembers that Brandon Vietti exists, and had just as much creative control over the show as Greg.
Drink until you die because Season 3 was announced and confirmed. (Note: Not recommended if you want to be alive when it airs.)
Take a dozen drinks because Season 4 was announced and confirmed.