Takes ages going to pot this red (7)
I believe the answer is:
dithers
'takes ages' is the definition.
The answer and definition can be both related to bodily activities as well as being verbs in their -s form.
Perhaps there's a link between them I don't understand?
'going to pot this red' is the wordplay.
'going to pot' indicates anagramming the letters.
'this'+'red'='thisred'
'thisred' is an anagram of 'DITHERS'.
Can you help me to learn more?
(Other definitions for dithers that I've seen before include "Hesitates indecisively" , "Flaps, wavers" .)