Margo: What time does the band start tonight?
Gerry: It's not tonight, it's tomorrow dufus!
Margo: Oh, crap! I thought it was Saturday!
Gerry: Dumass!
Margo: I'm supposed to be at work in an hour!
Gerry: FAHK!
Margo: Cya!
Margo thought it was Saturday, but it's Friday and she has to be at work in an hour.