paper airplane
n.— «The much-touted Boeing 7E7 Dreamliner is still just a paper airplane, but that’s likely to change soon.» —“Boeing officials report solid base of commitments to launch 7E7 Dreamliner” by Bob Cox Fort Worth Star-Telegram (Texas) July 21, 2004. (source: Double-Tongued Dictionary)
Further reading
A Dallas, Texas, woman and her friends often use the expression All the things to mean something like and whatnot or as a way to signal a kind of mutual understanding, suggesting something similar to the phrase you know. This sense probably comes...
Catina from Abilene, Texas, says her young daughter and her friends fondly refer to each other with the word sigma. The slang terms sigma and sigma male were originally used in the manosphere to denote “an outsider,” and carried a...