Second toady produces pen, hastily (6)
I believe the answer is:
scrawl
'pen hastily' is the definition.
(to scrawl is to write hastily or untidily)
'second toady' is the wordplay.
'second' becomes 's' (common abbreviation).
'toady' becomes 'crawl' (toady can mean to crawl or act sycophantically).
's'+'crawl'='SCRAWL'
'produces' acts as a link.
(Other definitions for scrawl that I've seen before include "Untidy writing" , "Scribble" , "Write carelessly or sloppily" , "Illegible handwriting" , "Write poorly, bad handwriting" .)