they kind of put their head back

22:16 Apr 22, 2020 

In Spanish, or at least in this variant, we usually convey this idea with the expression "como que". Example: Le digo una y otra vez que use la mascarilla, pero como que no entiende (o no quiere entender).
That said, you can do without the "como que" in this particular case.

20:17 Apr 22, 2020 

I agree! "kind of" or "sort of" are useless fillers not worth translating. You either do or you don't do something, but the halfway connotation of 'kind of' makes no sense. It's like being 'a little' pregnant. Skeptical might be a good choice. Thanks!

20:07 Apr 22, 2020 

Hi Lydia. A lot of people these days throw in this "kind of" phrase as a completely meaningless filler that doesn't add anything pertinent to what they're saying;l it's very annoying to listen to. "Kind of" actually means "to some extent" or "somewhat" or "not exactly" ... which isn't relevant in this context. I think that "throw their head back" probably indicates that they look skeptical. You can find some way of phrasing that in Spanish. I hope that kind of helps :)