The victim's tale - an english assignment

'There he is again, fourth time today,' pondered
John about a suspicious man, who wandered,
Back and forth outside of his small take-out shop.
'Does he want to buy something, or just stop
In and have a look?' John thought no more of it,
As it would be closing time in a short bit
And John was eager to pack up, go home and
Prepare himself for the wild weekend at hand.
It was his son's birthday party on Sunday
And John was going, once he closed up, to pay
For a gift, which he knew his young son would
Adore; it was a bicycle, which his son could
Ride anytime. Suddenly the clock struck eight;
Meaning that he should leave, as to not be late
For buying his son's gift. Choosing to set out
Quickly, and without further delay or doubt
John closed the register tightly, and headed
For the two front doors. But, as John proceeded
Towards the doors, a huge man dressed in black,
Large as an ox, stopped him dead in his tracks.
'Hand over your money made today and I swear
Not to hurt you,' bargained the mugger. 'There,'
Replied John, with obvious and utter distress,
As he handed over his hard-earned cash.
The loss of this money, meant that he could not buy
His son the bike that he wanted to supply.
Suddenly there came an almighty crash,
John ran outside to see a calamitous mash:
There on the ground, lay the mugger who had stolen
All of John's dough, who'd tripped over a hole in
The pavement and was unable to rise.
John phoned the police, they arrived to hear cries
From the injured attacker lying there defenceless,
Who had been sought by police for many offences.
Luck was there on John's side, as there was a reward.
As the payout for his capture went down well with the horde;
The money was more than enough for humble John
To buy his son that new bike; and so karma had won.'