Thwak is a Smash. The Off-Off-Broadway debut of the Australian comedy duo, the Umbilical Brothers, made such a splash at the Westbeth Theater Center, the show closed there May 9 and has made a commercial move to the Minetta Lane Theater, starting up again May 25

The Drama Desk-nominated show, which started previews March 4 and opened March 18, is an evening of physical comedy and self-produced sound effects.

The Brothers are writer-performers David Collins and Shane Dundas, whose past shows include Don't Explain and Heaven by Storm. The two have performed these pieces all over the world, including on London's West End and in Germany, South America, South Africa, Singapore, Australia, New Zealand, Spain and Canada. Awards given to the purveyors of "tightly choreographed mayhem, mime and live audio acrobatics" include five consecutive years worth of Australian Entertainment's MO Award for Best Comedy Group, the Critics Choice Award for comedy in 1995's Edinburgh Festival and the United Slapstick Award in Germany. Television appearances here have included Jay Leno, a stint on Fox's "American Comedy Awards" March 15, and all the sound and voice work on Nickelodeon's animated series, "Maisy."

Philip Wm. McKinley directs. McKinley's credits include Off-Broadway's Zombie Prom, Chanel, the 30th anniversary production of Hair and A Little Night Music with Betty Buckley.

The design team features Josh Monroe (lighting), Bradley Mayer (sets) and Ray Schilke (sound). Producing the crosstown move are John Bard Manulis & Liz Heller and Metropolitan Entertainment Group (John Scher/Jeff Rowland).

For tickets to Thwak at both Westbeth and the Minetta Lane call Ticketmaster at (212) 307-4100.

-- By David Lefkowitz and Christine Ehren