Make their lot sit out – now we're getting somewhere (5,4,4,2)
I believe the answer is:
thats more like it
'we're getting somewhere' is the definition.
I know nothing about this answer so I cannot tell whether this works.
'make their lot sit out' is the wordplay.
'out' indicates anagramming the letters (out can mean wrong or inaccurate).
'make'+'their'+'lot'+'sit'='maketheirlotsit'
'maketheirlotsit' with letters rearranged gives 'THATS MORE LIKE IT'.
'now' is the link.
Can you help me to learn more?
(Other definitions for thats more like it that I've seen before include "Recognition of improved correspondence" , "said to encourage you" , "It's much better!" .)