In Barbados, we used to say "cheese on toast" instead of "Jesus Christ" as kids. My parents still got mad at me.

“cheese and crackers”, “jezzum crow”, and others are variants on the idea.

other fun minced oaths: “cor, blimey”, “zounds!”, “doggone”, “gadzooks”, and most other things that sound vaguely like they would belong in 1930s radio dramas.

"Jiminy Cricket" is another, right?

yes, which makes disney’s Pinocchio character a little bit, uh, on the nose.

Jeepers Creepers

Sheesh (Jeesh)

Ah ‘poppycock’ I didn’t know that one - so it’s basically saying “that’s shit” which is a pretty familiar expression. I always thought ‘poppy cock’ sounded like it meant ‘ridiculous’ in a ‘flashy and silly’ kind of a way - but actually it means ‘worthless and revolting’ in a ‘ diarrhea’ sort of way