Just like it sounds. Two piles of crap linked together by some sort of connective device or idea.
A Turdchuck often refers to two horrible ideas that you are trying to link together, but it could also be used in a variety of other contexts. You can imagine using it to describe two extremely ugly people holding hands or maybe even a 1973 pinto towing a 1972 pinto.
by CoquilleScientist May 04, 2010