The “mewling quim” line (that’s the last time I’m typing that, I swear) has attained a kind of cult reverence among some MCU fans, simply because it’s just an arcane and outdated way of calling someone a C-word. To be specific, it’s actually a way of referring to someone as emitting a feeble cry whilst being the C-word in question. Funny stuff.
Anyway, Tom Hiddleston’s Loki directs the insult at Scarlett Johansson’s Black Widow after he’s captured and held captive on a Helicarrier. And it seems those two words sent the actors into hysterics. As “Loki” season 2 approaches and the WGA/SAG strike continues, Total Film collated interviews with Hiddleston, one of which included this tidbit from the actor:
“The scene between Black Widow and Loki in the cell on the Helicarrier, Scarlett [Johansson] and I had an amazing time playing it. We shot on a Monday, and we had spent all weekend running it at her house. Whenever I got to ‘mewling quim,’ I couldn’t say it because we would collapse into a fit of giggles. And I wondered if I was going to be able to say it and look her in the face without laughing. It just so happens I did.”
This moment isn’t the finest in MCU history. Thankfully, Loki as a character has evolved quite a bit since then.