“It wasn’t me.” “I’ll pay you back tomorrow.” “I did not have sexual relations with that woman.” “It’s a slam dunk case.” From puffery to bold-faced untruths, lying passes for truth so often that our reaction to it is often a mixture of outrage, disbelief, and laughter. That’s why four expert tall-tale tellers—a White House speechwriter for President Clinton, two comedians, and a former New York Times reporter—invite you, the average fabricator, to share a night of jocose dishonesty at the Liar Show, a stand-up performance where the moderators will share an outrageous, barely plausible personal story. Only three of them, however, will be telling the truth; it will be up to the audience to detect and expose the faker. The audience members who guess correctly are rewarded with T-shirts and the knowledge that it truly takes one to know one.

THE SHOW BEGINS AT 8:30 P.M. AT THE DC IMPROV, 1140 CONNECTICUT AVE. NW. $20. (202) 296-7008.