At a function (wedding/formal dinner etc) one person writes a set of predictable words/phrases that could be used in the speech/speeches that are about to be given on a piece of paper, rips the paper up and hands a word/phrase to every person at the table. When such words or phrases are used in the speech, the person with that piece of paper has to drink/down an alcoholic beverage.
This is hilarious if everyone takes part and great for lightening up a dull speech.
Best Man: I'm so glad that you two are going to be so HAPPY together
Person 1: Who's got 'Happy'?
Person 2: Me
Person 1: CONSUME!
*Person 2 drinks*
Person 1: I love the Wedding Speech Game!