a big jobby Share definition Flag 1. A large brown solid that makes its exit from a creatures body through the anus. 2. David Becham 1. I just did a big jobby 2. I hate david becham for he is a jobby, in fact he's a big jobby. a big jobby by McKean February 14, 2007 0 0 Get merch Get the a big jobby mug. Buy Now — $32.95 See more merch