Enjoying explosion? (6,1,5)

'enjoying explosion?' is the definition.
I don't know anything about this answer so I can't tell whether this works.

'enjoying explosion?' is the wordplay.
I cannot quite see how this works, but
'enjoying' could be 'having' (enjoy can mean to possess or make use of) and 'having' is found within the answer.
'explosion?' could be 'blast' (blast is a kind of explosion) and 'blast' is found in the answer.
A single letter 'a' remains which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).

Can you help me to learn more?