When one friend lives in Oakland and the other in San Francisco and neither wants to cross the Bay, so each proposes a plan to hang out trying to convince the other to make the trek.
Person 1 "come hang out in Oakland, it's super interesting"
Person 2 "why don't we go to North Beach in the city instead"
Person 1 "we always hang out in SF, let's do Oakland tonight"
When you meet another car going the wrong way on a one-way street - you must play a game of tug-a-chicken to gain dominance. The car that wins this extremely slow speed game of chicken determines the flow of traffic. The loser has to flip the traffic sign to show the new flow of traffic.
Oh snap, you just turned the wrong way down 2nd...buckle up, we're gonna have to play tug-a-chicken.