Glass itself is a liquid, so why call it liquid glass ? Just say spray on glass.
That’s a myth:
http://dwb4.unl.edu/Chem/CHEM869A/CHEM869ALinks/www.ualberta.ca/~bderksen/florin.html
Apparently this is not the accepted scientific view now. The idea that very old windows have flowed slightly has been debunked.
"The notion that glass flows to an appreciable extent over extended periods of time is not supported by empirical research or theoretical analysis" - Wikipedia
“Glass itself is a liquid”
True, but most people won’t believe it.