If Someone Squirts On You It May Be A Scam

“THE SQUIRT: This is also known as the mustard dip, the ketchup dip or the bird poo… It’s a classic scam which involves thieves getting the attention of their prey by squirting something on them. It can be a white mixture that looks like a pigeon’s handiwork on someone’s shoulder in the street or tomato ketchup in a cafe.”
-The BBC offers a helpful list of time-tested short cons to watch out for.