The Crossbow is a special weapon on Call Of Duty Black Ops multi-player and Zombies. The crossbow on zombies is explosive tiped and sticks to anyone, thing, or zombie. Once stuck it cannot be shaken off. However the bolt can be shaken off in multi-player.
When PaPed it's name changes to "Awful Lawton" and has a monkey bomb effect. It takes longer for the bolts to expolode in addition the explosions are bigger and more powerful. This should be used wisely.