Blow a gasket while parked alongside West Indian housing block (2,7)
I believe the answer is:
go bananas
'blow a gasket' is the definition.
I don't know anything about this answer so I can't tell whether this works.
'while parked alongside west indian housing block' is the wordplay.
I cannot quite understand how this works, but
'while' could be 'as' (eg 'while I walked' means 'as I walked') and 'as' is present in the answer.
'block' could be 'ban' (I've seen this in another clue) and 'ban' is found in the answer.
'indian' could be 'goan' (I've seen this before) and 'goan' is present in the leftover letters.
No letters remain.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for go bananas that I've seen before include "Become mad or furious" , "Freak out" , "Get very annoyed" , "Lose one's cool" , "Flip one's lid (sl.)" .)