"But first, you have to install the 'funny-manpages' package via
Synaptic Package Manager (assuming you are using Ubuntu). Just look
for 'funny-manpages'"
"In case you didn't read the description carefully, there's a
warning that says:
"A set of miscellaneous humorous manpages (don't take them too
seriously!). Includes, amongst others, rtfm (1). Warning! Some of
these manpages might be treated offensive. You've been warned."