This is a word wrongly defined by many people. It is actually a misspelling of the word gegg, which means to leap backwards into a hole whilst watching a snail race. It has come to mean a roundish thing commonly laid by a chicken, but this is WRONG!!!!!!!!!!
"Did you see John gegg then?"
"That was top-notch gegging!"
"Oooh, look at that chicken laying an egg. I might just scramble it!"