Young man collects Oscar with a ‘Bam!!’ (5)

'bam' is the definition.
I know nothing about this answer so I cannot tell whether it can be defined by this definition.

'young man collects oscar with a' is the wordplay.
'young man' becomes 'boy' (a boy is a male child).
'collects' means one lot of letters goes inside another.
'oscar' becomes 'O' (phonetic alphabet: alpha, bravo, charlie etc.).
'with' is a charade indicator (letters next to each other).
'boy' enclosing 'o' is 'booy'.
'booy'+'a'='BOOYA'

Can you help me to learn more?