Force express pleasure, setting up Twitter (7)
I believe the answer is:
chirrup
'twitter' is the definition.
(I know that twitter can be written as chirrup)
'force express pleasure setting up' is the wordplay.
'force express' becomes 'chi' (I can't justify this - if you can you should believe this answer much more).
'pleasure' becomes 'purr' (I have seen 'Express pleasure ' mean 'purr' so perhaps 'pleasure' could also mean 'purr').
'setting up' shows that the letters should be reversed in order.
'purr' in reverse letter order is 'rrup'.
'chi'+'rrup'='CHIRRUP'
Can you help me to learn more?
(Other definitions for chirrup that I've seen before include "Bird's noise" , "Cheep" , "Make high-pitched sounds" , "Make series of notes like grasshopper" , "Sound made by a bird" .)