I came across this dialogue between two members on here:
A: Are you under 30? [...]
B: I'm just on the cusp of being under 30 so [...]
This got me confused because it's unclear if the person is almost 30 or a little over 30.
I've also asked around and got mixed answers from native speakers -- some say under, some say over.
So I'd like to know what people on here think.
Could you please explain what the expresion means?
How is it different from just "on the cusp of being 30" ?
And because there are different opinions, is there any chance it is intended to be ambiguous?