Ass Larva 

Having an infestation of maggots with a combination of anal seepage

Tubby you got your ass larva all over me!

Ass Larva by mrs. sez sex slave May 27, 2011

ass larvae 

Larvae that or which originates from the region of the ass. Traditionally is used to make fun of, or "diss" someone, but may also come about in scientific discussion.

Mark is such an ass larvae,i swear he frikin has luv gravy for brains.

ass larvae by joe the toe and jake the snake April 27, 2004