just curious 

used when someone feels a strong need to know a piece of information about someone/something, but doesn't want to seem like they've been thinking about the person/event/etc. for the past hour or year

Girl: "Do you like girls by the way? Just curious lol"
friend she probably has a crush on: "Actually no lol"

just curious by My crush is straight :/ December 15, 2016

just curious 

Common phrase used as an answer to "Why do you ask?"

Usual Meaning: I was interested in your answer and will base my future responses around said answer.

Very similar to "Just asking"

Guy: Are you single?
Girl: Yes. Why do you ask?
Guy: No reason I was just curious.

Girl: Hey what are you doing tonight?
Guy: Not much, why whats up?
Girl: I was just curious. (Will generally follow up with girly phrase implying she wants him to hang out with her.)

just curious by 1CoolCAT November 21, 2010

just out of curiosity 

An innocent saying by a cute critter such as a quoll

I’m a cute quoll. I’m very cute. Jooc don’t you think I’m cute?
Toad: sure

Just out of curiosity

just out of curiosity by Cute quoll July 25, 2021