How Stamford Canal Was Clogged

How many Starbucks cups does it take to clog a 2.7 metre by 2.7 metre drain? Too many. Since the truth will never see the light of day, we might as well extrapolate from the following scenarios:

SMRT bus routing gone haywire

MRT train attempts to wash off graffiti

RSN submarine has flaky GPS

F1 driver took a wrong corner

LTA erects new ERP gantry

Homeless tent dwellers relocate from Changi beach