Paintball grenade

A paintball grenade comprising:

• a flexible resilient tube having a first end crimped sealed by a first clip and a second end crimped sealed by a second clip and a distended portion between the sealed ends containing pressurized marking fluid, wherein the tube defines a side discharge port configured to discharge the marking fluid along a discharge axis that is approximately transverse to a longitudinal axis of the tube, wherein the side discharge port is positioned between the first clip and the second clip;
• a blocking member disposed in the tube, wherein the blocking member is movable between a closed position that prevents fluid communication between the distended portion of the tube and the side discharge port and an open position that allows fluid communication between the distended portion of the tube and the side discharge port;
• wherein the tube has a folded portion between the blocking member and the first sealed end that is proximate the side discharge port;
• and
• whereby, when the paintball grenade is thrown and impacts an object, resulting hydrostatic shock through the marking fluid within the tube moves the blocking member from the closed position to the open position, allowing discharge of the marking fluid out of the side discharge port onto surrounding objects.