In and of itself, the name of the event is, shall we say, misleading? We will be sitting around a campfire, yes. But we will be doing more than just telling lies. We will be telling "Two Truths and a Lie." Read more in the comments.
How to play "Two Truths And a Lie: To start, one person makes three statements about themselves to the rest of the group. The trick is: all of the statements won’t be true—two of the statements given should be true and one should be a lie.
After they are finished, everyone should guess which statement they think was made up. Once everyone has made their guess, which statement was a lie is revealed. Then the teller chooses someone who guessed correctly to go next. We will play as many rounds as we'd like.