There are some behaviors many of us have seen that may immediately come to mind. Brazenly cutting in line is a HUGE no-no. That should be a given. Insulting people seems fairly obvious, but I've still seen it happen. Heaven help the person who goes after the last bag of Flamin' Hot Cheetos when THESE people are nearby.
Survey shows when attracting a romantic partner, THIS is the trait that "outranked sex, money, connection, and pretty much whatever else you can think of."