The act of receiving feces from an anus with only the use of one's mouth and then subsequently while the mouth is full performing felatio until orgasm.
"That chick was totally freaky. Not only did she start rimming me but she demanded I shit in her mouth and then she performed fecalatio on me!"
I'm thinking of doing a master cleanse to make my stomach feel better, but I've got fecalwormaphobia; I'm terrified I'll be firing tapeworms out of my anus.