This seems to be many of the verses originally requested.

[Tune: This is the Music Concert]

    * Now I'm a [Boy/Girl] Scout, as you can plainly see.
    * But if I weren't a [Boy/Girl] Scout, ...

   1. A bird watcher I'd be
      Hark a lark, flying through the park, SPLAT!
   2. A plumber I would be
      Plunge it, flush it, look out below!
   3. A mermaid I would be
      Bloop, bloop, bloop, bloop, bloop, bloop!
   4. A carpenter I'd be
      Two by four, nail it to the floor!

   5. A secretary I'd be
      z-z-z-z get the point, z-z-z-z get the point?
   6. A teacher I would be
      Sit down, shut up, throw away your gum!
   7. An airline attendant I'd be
      Coffee, tea, or me, sir; here's your little bag, BLEH!
   8. A typist I would be
      Ticka, ticka, ticka, ticka, ticka, ticka, ZING!
   9. A hippie I would be
      Love and peace, my hair is full of grease!
10. A farmer I would be
      Here's a cow, there's a cow, and here's another yuck!
11. A laundry worker I would be
      Starchy here, starchy there, starchy in your underwear!
12. A cashier I would be
      Twenty nine, forty nine, here is your change, sir!
13. A gym teacher I'd be
      We must, we must, improve the bust!
14. A medic I would be
      Turn around, drop your pants, jab, jab, jab!
15. A doctor I would be
      Take a pill; pay my bill! I'm going golfing!
16. An electrician I would be
      Positive, negative; turn on the juice--ZZZT!
17. A fireman I would be
      Jump lady! Jump lady! Whoo-ooah! GOTCHA!
18. A cook I would be
      Mix it, bake it; heartburn--BURP!
19. A ice cream maker I'd be
      Tutti-frutti, tutti-fruitti, nice ice cream!
20. A politician I would be
      Raise the taxes, lower the pay, vote for me on election day!
21. A butcher I would be
      Chop it up, grind it up, make a little patty!
22. A garbage collector I'd be
      Lift it, dump it, sort out the goodies!
23. A [Domino's] pizza maker I'd be
      30 minute, fast delivery!
24. A clam digger I would be
      Dig one here, dig one there--Oh my frozen derriere!
25. Superman I would be
      It's a bird, it's a plane, where is Lois Lane?
26. Lois Lane I would be
      Get away, get away, get away, Clark Kent!
27. A cyclist I would be
      peddle, peddle, peddle, peddle; ring, ring, ring!
28. A truck driver I'd be
      Here's a curve, there's a curve. HERE'S A BETTER CURVE! [Makes outline of shapely woman.]
29. A house cleaner I'd be
      Ooh, a bug; squish it in the rug!
30. A baby [toddler] I would be
      Mama, Dada, I wuv you!
31. A Preacher I would be
      Well, well, you never can tell; you might go to heaven, or you might go to hell!

Finally: A [Opposite organization] Scout I would be!

Dave