"Sour look" is an idiom for an expression of distaste or annoyance.
look before you leap
If you mean carboxylic ACID: yes that is (a bit) sour
A sour face is usually pursed lips, squinted eyes, and sucked in cheeks. It doesn't necessarily mean one ate something sour, but it looks as if they did.
Yes
sour
It means to be very angry or unpleasant. For more information, read the below stuff:Sour can mean unpleasant or bad-tempered, and sour-faced is how your face looks when you're feeling that way (you look like you just tasted something sour, like a lemon).
Tasting sour
a hateful/mean/unpleasant person
it will look dry and smell sour
From Urban Dictionary: a look of contempt or disdain. a loaded glance. "Look, I'm sorry but that's the way it is. Stop being a sour-puss. I see you giving me the stink-eye".
residue from making butter from sour milk
by mean types do you mean like salty,sour...or do you mean like fluid...?