Sorry to go off half-cock... but yes - it's a good sketch
Machine Gun Page 2
That's a damn fine sketch - nice and short and would work really well with an over-the-top performance (so to speak). Beat. Then suddenly back to completely normal.
Wildjesusfishkid' idea to call him Tommy is grand too.
There's a lot of scope to have repeat sketches too, where the same guy approaches everything with ridiculous child-like sounds. That inexplicably everyone else just ignores.
Anyways - that's enough of my rambling...