Maybe he's spotted a turd or an elastoplast in the water.
From the guardian.co.uk
Inventing new taxes is just more elastoplast.
From the nbr.co.nz
His emergency response equipment consists of elastoplast and a couple of paracetomol, and yes he does deliver pizzas on the sly too.
From the bucksfreepress.co.uk
Cradling three-year-old Sabia in her arms, Halima Um Qais traced her finger along the three elastoplast strips on her daughter's forehead.
From the independent.co.uk
More examples
An elastic adhesive bandage for covering cuts or wounds
Elastoplast is a brand of adhesive bandages (also called sticking plasters) and medical dressings made by Beiersdorf. Beiersdorf bought UK and Commonwealth rights from the parent company, Smith & Nephew in 1992 for u00A346.5 million. It has become a genericized trademark for "sticking plaster" in some Commonwealth countries including the United Kingdom and Australia.
Useful for emergency repairs to fell shoes.
N. 1. Band Aid. The term was originally a brand name. The term plaster may also be heard. This is taken from the old fashioned plasters used before the days of the band aid.