In case there is any doubt about what mountain biking is about, ponder the names the manufacturers give them, knowing exactly what it takes to appeal to mountain bikers:

 

Cannondale Bad Habit

Cannondale Scalpel

Cannondale Trigger

Evil Bikes

Giant Thruster

GT Aggressor

GT Avalanche

GT Fury

JD Sports Destroyer

Marin Attack Trail

Rocky Mountain Slayer

Scott Voltage

StumpJumper

Terrain Destroyer

Titan Men's Punisher

Trek Slash

 

Did I miss any other appropriate names?