When you finally ejaculate and shoot you cum into your lovers bellybutton and sprinkle a little water onto the cum so it slightly coagulates and force them to eat it with a spoon.
Fap as in masturbation... when a male cums in the shower and the semen hits the hot water in the shower, it clumps/scrambles into a colloid similar to tapioca pudding, hence, we call it FAPioca pudding.
God is supposedly omnipresent, which means he sees all, all the time. Fapture occurs when there are so many people simultaneously masturbating that God can no longer stand to see it all and comes back to tell everyone to knock it the hell off.