Just leave the cashiers alone, sit there and wait. I fucking hated check people. Fuck you . Checks do not belong at Grocery Stores. They may accept them, but only because they are forced to.
Checks take the longest of any option in line.
That screws everyone behind you in the line. They have to wait through the long approval process which they wouldn't have to if those check dicks would just bring cash. If you are one of those check assholes, at least learn what ID is needed and bring it. I can't tell you how many assholes who would just give me a check and expect me to take it. Next, on large orders, expect them to call the bank.