Endless crap punk dancing around spilled gin - it's getting going (8,2)

'getting going' is the definition.
(crank up can mean to start or cause)

'endless crap punk dancing around spilled gin' is the wordplay.
'endless' means to remove the last letter.
'dancing' is an anagram indicator.
'around' is an insertion indicator.
'spilled' indicates anagramming the letters.
'crap' with its last letter removed is 'cra'.
'cra'+'punk'='crapunk'
'crapunk' with letters rearranged gives 'crankup'.
'gin' anagrammed gives 'ing'.
'crankup' placed around 'ing' is 'CRANKING UP'.

'it's' acts as a link.