How to Make an Airsoft Grenade

1.a empty bottle 2.a paper towel 3.any kind of vinegar 4.baking soda 5.any kind of BB's

First you take the bottle and fill about a fourth of it with vinegar. Then you put about 25 BB's in the bottle. After that you put about 3 spoonfuls of the baking soda on the paper towel. Then you roll it up so it fits in the bottle. And finally u put it in the bottle and put the cap back on and then shake it 10-15 times as hard as you can and chuck it at the ground and then it will explode!