I see what you did there.
Is this another 'zij zijn zijn zoons'?
Can you also say "Zij zijn in haar haar."? Do the dutch says someone is"in their hair" when they are being bothered by that person?
They do the "in their hair" part, but not the "is". Rather, the Dutch uses "zitten" (to sit), in the meaning of having a location.
Of course, probably somewhat regional, you could say "Ze zit haar in haar haar."
Where is her hair? I'm guessing maybe that pet rhinoceros of hers stole it. (I love some of these silly questions.)
Right? It makes learning that much more fun, and I feel it's also easier to remember these over more mundane sentences :)