see someone coming

see (one) coming

To view someone as being particularly gullible and thus easy to deceive, swindle, or exploit. The guys in that shop must have seen me coming, because they convinced me to buy the most expensive stuff they had. I can't believe they managed to sell you such a piece of junk. I bet they saw you coming a mile away.
See also: coming, see

see someone coming

recognize a person who can be fooled or deceived. informal
See also: coming, see, someone