bust rails 

To go about snorting a powdered drug, usually cocaine but not limited to mdma, meth, and painkillers like vicodin or percadin.

Druggie: You down to bust some rails before the party?
Stoner: Sure, but I wanna smoke a bowl before we leave, too.

bust rails by TFS August 11, 2005

Bust a rail 

To sniff a line of cocaine, extacy, oxycontin or any powder drug.

"Ey, whats good man? You wanna bust a rail?"

"Nah, I don't fuck with that shit."

Bust a rail by VicBC February 22, 2012