Example 1: (playful)
Man: I have a
double rainbow shirt.
Woman: You've got to be
shitting me!
Man: Nah! Totally got one!
Woman:
No fucking way.
Man: Way.
Example 2: (serious)
Man 1: I was waiting around to be picked up for three damn hours.
Man 2: Dude... you've got to be shitting me.
Man 1: Fuckin serious, man.