Failure to notice the big giant sign hanging above the checkout.
0(0.0%)
"Obviously that doesn't apply to me."
3(9.7%)
Can't be bothered to count the items in their basket.
2(6.5%)
Inability to count as far as ten.
1(3.2%)
"When they say ten items, they really mean fourteen or fifteen."
0(0.0%)
Willfull evilness.
1(3.2%)
They just don't care.
2(6.5%)