The Dink Network

This is a binman limerick... sort of.

Tim Finnegan's a binman.
Jim Linehan's his assistant.
Tim Finnegan's sixty.
Jim Linehan isn't.

Tim Finnegan flings dirt in bins.
Jim Linehan shirks his stint.
Tim Finnegan irks at him, if
Jim Linehan isn't tipping.

Tim fills bins with dirt and lint;
Jim sits scribbling riddles in slips.
Tim hits him with vigour in the chin.
Jim gives him a glimpse, "Fiddlesticks!"
Or something similar.

Tim picks litter and filth with his stick.
Jim gives him the slip and nicks his stick.
Jim is riddled with guilt. Basis?:
Tim irked is a big, big risk.

Tim brings his dinner drink with him.
Jim thinks the drink is his, drinks.
Jim, twigs it isn't, spits it in the bin.
Tim flings the drinks tin at him.
Cyclic, isn't it?

Jim Linehan is in a fix.
Tim Finnegan's nitpicked his business:
"Jim Linehan's a persistent jinx!"
Tim wishes Jim dismissed.

Tim Finnegan's a deliberate snitch.
His business kicks him from the district.
Jim Linehan's considered innocent.
This is typical in this kingdom.
Still, spilt milk, Tim, isn't it?