The Ninja Epidemic

You take on of the grenades your cousin gave you and pull the pin. You throw it into the small wooded area beside the store and count to five. Nothing happens. Your cousin gave you a fucking dud. So much for that plan. Now what?

As you are trying to come up with a back up plan you hear a huge explosion from the wooded area that leaves your ears ringing. "Holy shit!" Rick exclaims. Maybe it wasn't a dud afterall.

While the cops are scrambling around trying to figure out what's going on, they appear to have forgotten about your cousin. He gets into his truck and drives off, his exhaust backfiring like gunfire as he drives away.

One of the police gets in his cruiser and gives chase while the others investigate the area of smoke where the grenade detonated. None of them are wise to the fact that you threw it.

"What do we do now?" Rick asks you.