He wants to pay by check, but there's a sign "no checks". Instead of saying, "We don't take checks", the girl says, "Yo" and points to the sign. Yao says "Yao" as if she's mispronouncing his name. This goes a couple of rounds before the manager comes by and it starts all over. Annoying might be too tame a word.
It was cute (on the low average end of the bell curve) the first 5 or so times it ran. Now its just more electronic noise to tune out.