Please fire me. When a German couple ordered a “chizz” burger, I corrected them by asking them if...

Please fire me. When a German couple ordered a “chizz” burger, I corrected them by asking them if they’d like a “cheese” burger. The wife/female glared at me and said “Yes, a chizz burger.” Afterwards, I read their order back to them and both, furiously declined when I said “cheese” burger.