Is a sexual act requiring two people. one cock and one anus. the anus needs to be on the verge of taking a shit. The one with the cock then spits a thick mucus filled loogie onto the anus and pushes it in with their cock, then rapidly ejaculating. The anus party then pushes out the now enveloped loogie/ semen mixture, which is presumably completely encased in shit. This shit egg can then be hidden in the yard by someone in an easter bunny suit.
The night before easter I gave my girlfriend a cadbury creme egg, I then grabbed it and hid it along with other dyed eggs and candy. unfortunately her niece found it and put it in her easter basket.