Joke/Pun - I couldn't resist

On Feb 11, 4:53*am, wrote:
I have often researched or contemplated launch rail systems, because
your fuel/energy storage all get to sit on the ground and there is no
penalty for having to lift the fuel itself up. I was just now
contemplating an underground launch rail, which might either be
vertical or at an angle, with the "muzzle" on the surface. Like any
launch rail, it saves on cost of the projectile itself, which does not
need staging, etc. BUT....here's the joke/pun, so strap yourself in
and get ready!

One cost consideration, though, is: ****There's a lot of overhead
underfoot!****

Ha! Ha! Ha! Ha! Ha!

Am I invited on the Tonight Show, yet?

For its innocence and lack of swearing I award you the Intergalactic
Medal for One Liners