It originated from the name of the male reproductive organ. It is the same shape and in some cases it is probably the size of yours if you are a guy reading this. Don't get fooled by pen and penis. Don't forget to put a space after pen when it is followed by the verb is, otherwise you would have spelt penis. See exemple below.
That pen is miniscular.
by French May 20, 2003
Get the penmug. by I love pens July 17, 2022
Get the Pensmug. by Max woodman July 15, 2021
Get the Penningmug. by hemoglobin3000 May 11, 2021
Get the Penned inmug.
Get the penmug. pouched egg nipples - When a woman has giant areolas that make her breats resemble pouched eggs. Normally resulting in stretched nipples.
by OMGWTF October 14, 2006
Get the PENmug. pen-a fabulous female with dyed black hair(usually)and very artistic and intelligent a bit of a cassonova but when they find the perfect match they will settle and have a lot of children(3 sometimes 4)and will be very stubborn but with a good sense of humor
by beingthegiraffe February 26, 2010
Get the penmug.