Poison Pen 

Something written in malice or spite: to be dismissive, usually in a mean spirited way.

Yeah, I got an email from Maeve. She said that only I would look good in a donkey suit considering I am an ass. Wow, what a poison pen email.

Poison Pen by Tigerino July 9, 2010

poison-pen writer 

one who writes write-ups full of malice, slander, etc.

Poison-pen writers are an execrable lot.

poison-pen writer by uttam maharjan December 23, 2012

Prison Pen 

A Prison Pen is a form of improvised writing instrument, which is achieved when one defecates just enough to extend past the buttocks and holds it there. The extended fecal matter is then used as a writing device in a manner similar to that of a mechanical pencil.

Person 1: Our boat is destroyed! How are we going to send an SOS?

Person 2: well there's a large rock face over there, we could use our Prison Pens

Person 1: I hate you so f**king much. If we starve I'm eating you first.

Prison Pen by C1PH3R8472 February 23, 2020

penis poison 

when you end up with an unexpected thing after having sex

he gave her penis poison and then 9 months later....along came baby

penis poison by gatorgrl December 22, 2008