The amount of wood that woodchucks would chuck on a given day varies greatly with the individual woodchuck. According to a Wall Street Journal article, New York State wildlife expert Richard Thomas found that a woodchuck could chuck around 35 cubic feet of dirt in the course of digging a burrow. Thomas reasoned that if a woodchuck could chuck wood, he would chuck an amount equal to 700 pounds.
Using the formula: (W + I) * C where W = the constant of wood, which is well known to be 61, as agreed in many scientific circles. I = the variable in this equation, and stands for the word "if" from the original problem. As there are three circumstances, with 0 equaling the chance that the woodchuck cannot chuck wood, 1 being the theory that the woodchuck can chuck wood but chooses not to, and 2 standing for the probability that the woodchuck can and will chuck wood, we clearly must choose 2 for use in this equation. C = the constant of Chuck Norris, whose presence in any problem involving the word chuck must there, is well known to equal 1.1 of any known being, therefore the final part of this calculation is 1.1. As is clear, this appears to give the answer of (61 + 2) * 1.1 = (63) * 1.1 = 69.3. However, Chuck Norris' awesome roundhouse kick declares that all decimal points cannot be used in formulas such as this, and so it must be rounded to the final solution of 69 units of wood.
How Chuck Norris got involve: A woodchuck would only chuck as much would as Chuck Norris would allow it to, because the woodchuck shares Chuck's name. Therefore, Chuck must punish it and make it chuck as much wood as Chuck can. So, a woodchuck would chuck as much wood as Chuck could.
Source : Encarta Encyclopedia