Enter while rolling joint? This will ensure discipline in the house (5-4,4)
I believe the answer is:
three-line whip
'this will ensure discipline in the house' is the definition.
I know nothing about this answer so I cannot tell whether this works.
'enter while rolling joint?' is the wordplay.
'rolling' indicates an anagram.
'joint?' becomes 'hip' (part of body).
'enter'+'while'='enterwhile'
'enterwhile' is an anagram of 'threelinew'.
'threelinew'+'hip'='THREE-LINE WHIP'
Can you help me to learn more?
(Other definitions for three-line whip that I've seen before include "Demand for MP's vote" , "Parliamentary voting instruction" , "Important instruction to MPs" , "Urgent call to vote" , "Firm instruction to voting MPs" .)