[Do not read the following if easily offended]
In June of 2008, an autograph hunter named Dan emailed a member of Rik Mayall's management team in an effort to gain a copy of the Young One's signature for his collection. He received the following note, written and signed by Mayall on a printout of his original email, in the post over a month later.
Transcript follows. Image courtesy of Dan.

Image: Dan
Transcript
Here you are you cheapskate money-grabbing Welsh cunt — where's the fucking envelope you deformity??
Here you are Daniel, thank you so much for writing. I hope you like the picture.
Best wishes my dear friend
(Signed, 'Rik Mayall')