from the upcoming rap song:
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"eatin' quarts o' split pea soup, poopin' yards, poopin' yards"

and good lyrics deserve good math...

3.75" deep, 8" bottom, 9.75" top  //Josh's mom's cast-iron pot
 avg diameter=8.875
 avg radius=4.4375

volume of pot=pi r^2 x depth
             =3.1415926 x 4.4375^2 x 3.75
             =231.9839105947265625 cubic inches of soup/stew/chili...

    divide by 57.75 cubic inches per quart (tnx                   http://www.google.com/intl/en/help/features.html#calculator )
             =4.0170374128956980519480519480519 quarts        (QED "quarts")
              I think I've got a gallon pot there!

avg turd diameter = 1.75  inches?  seems about right?  you can measure, adjust...
avg turd radius   =  .875 inches

volume of turd          =pi r^2 x length

231.9839105947265625 ci =3.1415926 x .875^2 x length
                        =2.405281834375     x length
96.447704081632653061224489795918 inches=length! just over 8 feet, or,

more precisely, 2.6791028911564625850340136054422 yards of healthy large-bore poop.
QED "yards"

yay!