1. pen and paper - Noun
2. pen and paper - Adjective
pen and paper (uncountable)
A combination which can be used for writing.
pen-and-paper (not comparable)
Performed via writing on paper, such as filling in a form, doing an exam, writing a document, etc.
pen-and-paper
A small shed to the side of the antenna housed an analog pen-and-paper recording system. Source: Internet
Taken as a whole, modern cryptography has become much more impervious to cryptanalysis than the pen-and-paper systems of the past, and now seems to have the upper hand against pure cryptanalysis. Source: Internet
Pen and paper are risky. Source: Internet