Definitions by Rural dicktionary

Raider Blastmaster 

When you pop a thumb up a girls asshole while sticking two or more other fingers in her vagina.

Mikey: "Yeah bro, I was with this boning chick last night and I totally gave her a good old raider blastmaster. It was pretty sick."
Jim: "Dude noice"

Raider Blastmaster by Rural dicktionary May 28, 2015