alligator arms
n.pl.— «Some of the best players in the NBA have developed “alligator arms”— sports parlance for not extending the arms—under the pressure of big free throws.» —“The fine art of shooting free throws” by Eric Plummer Bonner County Daily Bee (Sandpoint, Idaho) Dec. 31, 2008. (source: Double-Tongued Dictionary)
Further reading
A magnificent new book celebrates the richness and diversity of 450 years of written and spoken English in what is now the United States. It’s called The People’s Tongue, and it’s a sumptuous collection of essays, letters, poems...
If you’re ever near a sundial, step closer and look for a message. Many sundials bear haunting, poetic inscriptions about the brevity of life. Plus, language development in toddlers: why and how little ones pick up the exclamation Uh-oh...