Yo mama is so stubborn...

Her GPS gave up rerouting and just started agreeing with her.

Did You Know?

The joke works because GPS units are designed to constantly recalculate routes when you go off-path — imagining one just giving up and siding with a stubborn passenger is absurd. Modern GPS technology can recalculate a new route in under a second, using satellite signals from at least four satellites simultaneously to pinpoint your exact location.