I’ve often wondered how Odin and Frigga passed Loki off as their child when it had to have been obvious that Frigga wasn’t pregnant a second time. One option I’d idly entertained in the past was that Odin brought Loki back just as Frigga was giving birth to Thor and they’re like “WOOPS LOOKS LIKE IT WAS TWINS”…but they still called Thor the “firstborn” because one of the twins had to have been born first…and I bet Thor would really rub it in and call Loki his little brother all the time…and Loki would be gritting his teeth like “BY SEVEN MINUTES YOU OAF.”
Also, if that was true, the kind of ironic thing would be Loki may actually have been born first.
ANYWAY.
Pointless (probably wrong) speculation, brought to mind again by that bit of dialogue. 😀