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.
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.
by C1PH3R8472 February 23, 2020
Get the Prison Penmug. 
when you have anal sex and the girl/guy/other bleed from the anus and there’s blood on the dick(object) in the anus and it comes out of the anus a slight tint of red
dan:yo i had anal sex with my girl, and she started bleeding because we’ve never done it before.
steve:oh man bro did you have a strawberry pen?
dan:...yehhh.....
steve:oh man bro did you have a strawberry pen?
dan:...yehhh.....
by blahblahloop November 1, 2019
Get the strawberry penmug. 
by Zebra Hands August 12, 2016
Get the Pen Burglarmug. 