Shock maybe about old books offering nonsense

• Rubbish musical about Heart of Midlothian
• Erotic song that's supposed to impress listeners

Wikipedia Word definitions in Wikipedia
Hot air in economics refers to the Assigned Amount Units (AAU) credits given for the reduction of Green House Gas (GHG) emissions among the former Soviet Bloc countries since 1990. The fall of the Soviet Union led to massive restructuring and deindustrialization ...

Wiktionary Word definitions in Wiktionary
n. 1 (context literal English) Air that has been heated, especially so as to function as the lifting agent of a hot-air balloon. 2 (context idiomatic English) empty, confused, or exaggerated talk lacking meaning or substance; bluster.

WordNet Word definitions in WordNet
n. air that has been heated and tends to rise loud and confused and empty talk; "mere rhetoric" [syn: palaver , empty words , empty talk , rhetoric ]

Longman Dictionary of Contemporary English Word definitions in Longman Dictionary of Contemporary English
noun EXAMPLES FROM CORPUS ▪ Today, however, most recommendations are known to be hot air and tail-covering platitudes. ▪ Too much hot air and not enough plan. ▪ You think this stuff about flying is a lot of hot air .