Going crazy here, late tonight, fully undressed (2,3,10)
I believe the answer is:
in the altogether
'fully undressed' is the definition.
'in the altogether' can be an answer for 'undressed'. I am not sure about the 'fully' bit.
'going crazy here late tonight' is the wordplay.
'going crazy' indicates anagramming the letters.
'here'+'late'+'tonight'='herelatetonight'
'herelatetonight' with letters rearranged gives 'IN THE ALTOGETHER'.
Can you help me to learn more?
(Other definitions for in the altogether that I've seen before include "unclothed" , "wearing nothing?" , "having nothing to wear?" , "Naked" , "exposed" .)