It’s matinee day at the National Theatre. The house is packed with audience members who have come to the theatre on “culture coupons” to see the artistic director’s latest production. But when the show begins and the audience becomes bored, they rise up in protest and begin a performance of their own. The Velvet Weapon is a riotous farce that stages a comic battle between the forces of highbrow and lowbrow art and tells the story of what happens when the audience takes over the show