A very popular fanfic archive website fanfiction.net that has come under fire for the badfic therein.
After banning all adult content, ff.net became known for an absurd ratio of incredibly bad and juvenile fanfiction. Thus, the name "Pit Of Voles" was born on the TWoP Forums.
A descriptive term for the vagina, referring to a small rodent's stomach. This term was much used in certain academic establishments in the United Kingdom to pass scrutiny during banterous exchanges pre-lecture.
"Hey Nige, we saw you dissapearwith that lass from our politics group, did you pump the slit voles stomach?"