I know this seems like a ridiculous question butt couldn’t you use lime juice instead of lemon juice here if you wanted.

Yes, you can. I have a lime tree so I often sub lime juice for lemon or mix them if I need a lot.

Absolutely! then they'll be lime bars, but I expect they will be delicious! Wish I'd thought of that, as I like lime much better than lemon. Let us know how they turn out, ok?

Sure you can. It will have a lime flavor instead of lemon. Lime is tart like lemon plus it also has a bitterness that some people enjoy and some people don't. Just something to be aware of :)

Not a ridiculous question, and yes, you can use lime juice.