That was me at first.

I think the "cross eyed" phrase is a bit ambiguous.

What I ended up with (I think) is a focal point not closer than the screen but farther than it. My eyes didn't want to do it at first but then they did.

What is weird about it is the focusing and focal point are out of sync --- my brain can do it but the weird feeling is one of "gosh, this thing is a lot closer than it should be" where "should be" is based on focal point, and "is a lot closer" is based on focus.

Don't want to do this too much, feels like I could easily decalibrate my brain for real life lol.