Reporters acquiring lice problem - that's very funny (9)
I believe the answer is:
priceless
'very funny' is the definition.
(I've seen this before)
'reporters acquiring lice problem' is the wordplay.
'reporters' becomes 'press' (members of the press).
'acquiring' indicates putting letters inside.
'problem' indicates an anagram.
'lice' anagrammed gives 'icel'.
'press' placed around 'icel' is 'PRICELESS'.
'that's' acts as a link.
(Other definitions for priceless that I've seen before include "Killing" , "Of incalculable value" , "Wonderful" , "of inestimable worth" , "Very precious; highly amusing" .)