とでも思った

did you think … or something?

→ と
phrase Rare #27,543
did you think … or something? Often used rhetorically to challenge or criticize someone’s assumption.
JA: 彼が来ないとでも思った?
EN: Did you think he wasn’t coming or something?

奥様のようになれるとでも思ったの?

Did you think you could become like my wife?

— レベッカ (1940)

この家に法がないとでも思ったか!

Did you think there were no rules in this house?!

— 紅夢 (1991)

礼を言うとでも思ったのか

Did you think I was going to thank you?

— 風の谷のナウシカ (1984)

お人好しの馬鹿とでも思った?

Did you take me for some naive fool?

— 動くな、死ね、甦れ! (1990)

冗談だとでも思ったのか?

Did you think I was joking or something?

— レザボア・ドッグス (1992)