From Vandalwiki

[edit] A POoop poo blowjob is a thing where you take a lump of shit and oh god' it's fucking disgusting even to fucking talk about it, but then you take the piece of shit and stick it into your mouth. but you pretend it's a dick or something and give the shitty poops a blowjob or something.

[edit] it a well-known terrible and weird act. example of use: "and he performed that most disgusting of acts, that, of a poop poo blowjob".