I was bored so I made this in like 5 minutes...

Just open notepad and replace all wafflemasterqwertys with your name.

You can use this at a script builder or something

if script.Parent.className ~= "HopperBin" then
local h = Instance.new("HopperBin")
h.Parent = game.Players.wafflemasterqwerty.Backpack
h.Name = "SuicideBomb!"
local p = Instance.new("Part")
p.Parent = game.Workspace.wafflemasterqwerty
p.Name = "SuicideBomb"
p.Size = Vector3.new(2,2,1)
p.TopSurface = 0
p.BottomSurface = 0
p.Locked = true
p.BrickColor = BrickColor.new("Really black")
local w = Instance.new("Weld")
w.Parent = p.Parent
w.Part0 = p
w.Part1 = p.Parent.Torso
w.C0 = CFrame.new(0,0,-1)
script.Parent = h
local d = Instance.new("Decal")
d.Parent = p
d.Face = "Back"
d.Texture = "http://www.roblox.com/asset/?id=28824625"
Instance.new("BlockMesh").Parent = p
end

tool = script.Parent

function click(mouse)
if game.Workspace.wafflemasterqwerty:FindFirstChild("SuicideBomb") ~= nil then
local s = Instance.new("Sparkles")
s.Parent = game.Workspace.wafflemasterqwerty.SuicideBomb
s.Color = Color3.new(.5,.5,0)
wait(3)
local e = Instance.new("Explosion")
e.Parent = game.Workspace
e.BlastPressure = 1000000
e.BlastRadius = 15
e.Position = game.Workspace.wafflemasterqwerty.SuicideBomb.Position
else
script.Parent:Remove()
end
end

function selected(mouse)
mouse.Button1Down:connect(function () click(mouse) end)
end

tool.Selected:connect(selected)