Hold water, rum and ice to accommodate old male entertainer (5-2,8)

'entertainer' is the definition.
I don't know anything about this answer so I cannot tell whether this works.

'hold water rum and ice to accommodate old male' is the wordplay.
'hold water' becomes 'stand up' (stand up can mean to hold water or meet a standard).
'rum' indicates anagramming the letters (rum can mean strange or unusual).
'to accommodate' indicates putting letters inside.
'old male' becomes 'om' (this could be a standard abbreviation of which I'm unaware).
'and'+'ice'='andice'
'andice' is an anagram of 'cedian'.
'cedian' going around 'om' is 'comedian'.
'standup'+'comedian'='STAND-UP COMEDIAN'

Can you help me to learn more?