It's wrong to be a compulsive liar.
Adam is with friends, and they are all sharing wild stories from their pasts.
Adam wants to impress with his stories.
Adam thinks of some times in his life that odd things have happened and shares those stories with his friends.
Adam pulls many a story out of thin air that are clearly to good to be true.
Adam and his friends all have a good laugh looking back on their stories.
Adam's friends don't appreciate that he cannot be truthful with them and his constant lies eventually crumble atop one another which is quite embarrassing for him.