A lot provided by husband in bed? That's a crude comment (5,4)
I believe the answer is:
cheap shot
'comment' is the definition.
(I know that cheap shot is a type of barb)
'a lot provided by husband in bed?' is the wordplay.
'a lot' becomes 'heaps' (I've seen this in another clue).
'provided by' means one lot of letters go next to another.
'husband' becomes 'h' (abbreviation).
'in' means one lot of letters goes inside another.
'bed?' becomes 'cot' (cot is a type of bed).
'heaps'+'h'='heapsh'
'heapsh' inserted inside 'cot' is 'CHEAP SHOT'.
'that's a crude' is the link.
This may not be correct. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for cheap shot that I've seen before include "Unkind act" , "Barbed comment exploiting known weakness of target" .)