This one will leave you in stiches.

The owner of Express Vac and Sew, a Roxborough vacuum cleaner and sewing machine repair shop, was busted by police yesterday for running a dirty little side business.

Undercover narcotics cops made three drug buys from Darren Clarkson in the past week alone, including once in his shop, said Capt. Debra Frazier, the head of the Narcotics Field Unit. Clarkson, 41, sold pills and cocaine to the officers, Frazier said.

Investigators found 10 grams of cocaine, 62 percocets, eight valiums, $140 in cash and a .40 caliber handgun inside the shop, located on Ridge Avenue near Krams Avenue, Frazier added.

"The store is in the middle of a row of quiet stores on a sleepy block, but the only commerce he was involved in was drugs," Frazier said.

Clarkson was charged with weapons and narcotics violations. His girlfriend, Jennifer Crangle, was also arrested and charged with conspiracy and drug offenses, Frazier said.