How would you make this push people if the mouse is on them?[UNANSWERED]

So, this is a script that allows the animation to play when a player presses a certain key. But I'm wondering how to make it do force push? Like how would you make it so if your mouse is on the player, then the player "Sits" and, then gets flung just alittle bit?

User = game.Players.TheReapersComing

UserMouse = User:GetMouse()

 

Animation = Instance.new("Animation")

Animation.AnimationId = "http://www.roblox.com/Asset?ID=165757504"  -- Animation's id to make it look like the player's pushing the other player.

Animation.Name = "Force push."

animTrack = User.Character.Humanoid:LoadAnimation(Animation)

 

UserMouse.KeyDown:connect(function(key) -- keydown function

    if key == "f" then

    animTrack:Play()

    end

end)

This is inside a LocalScript in Workspace.

wait()

local User = game.Players.LocalPlayer
local UserMouse = User:GetMouse()
Animation = Instance.new("Animation")
Animation.AnimationId = "http://www.roblox.com/Asset?ID=165757504"
Animation.Name = "Force push."
local animTrack = User.Character.Humanoid:LoadAnimation(Animation)


while wait() do
	if UserMouse .Target then
		if UserMouse .Target.Parent:FindFirstChild("Humanoid") or   UserMouse.Target.Parent.Parent:FindFirstChild("Humanoid") then
			UserMouse.KeyDown:connect(function(key) -- keydown function
				   if key == "f" then
					    animTrack:Play()
				  end
			end)
		else
			animTrack:Stop()
		end
	end
end

Hope this helped!