The act of a man ejaculating into the batter of a muffin mix then pooping into the batter making the poop looking like chocolate chips then bake the muffin then ejaculating into the icing spreading onto the muffin. Then they present it to an unfavorable person or animal.
a game in which a group of people (usually of the male sex) gather areound a muffin in a circle. they then proceed to whack-off onto the muffin. finally, the looser (the last person to cum or the first to miss) must eat the jizz covered muffin.
"hey dood... wanna play the jizz muffin game?"
"no way man im no fag"