Rimsplitter 

A huge shit that makes you feel as though you'll be bleeding out through your ringpiece for weeks.

Dear God, that was one hell of a rimsplitter.

Rimsplitter by shoe face January 16, 2008

Railsplitter 

A roadie specializing in arranging lines of nose candy on the tour bus. When the band is finished with their show, they have little slices of heaven waiting for them.

Groupie: Can you get me on the bus?
Railsplitter: No, but I can get you high as heeeelllllllll.

Railsplitter by Bum Stigity Bum April 8, 2010