alexz I always picture the faller with their head aimed roughly in the direction of the fall when take a header is used, whether protecting it or not; for instance, a sot passes out while leaning on the railing of a pier and takes a header into the water.
came across this in an old Guardian UK article and find it's been attended to by assiduous wiktionarists. The gratifyingly droll phrase beware of deepities is the subheading beginning the paragraph in the article
a meme-ish phrase used when one has reached a milestone or accomplished something noteworthy. Derived from video games in which the player works through a hierarchical sequence or tree of goals; "unlocking" one allows further progress through the game, access to more difficult achievements, and often new powers, abilities, etc.
A term coined by researchers in Cornell University's Social Media Lab that describes small/innate lies which are usually sent electronically, and are used to terminate conversations or to save face. For example sending an SMS to someone reading "I have to go, the waiter is here" when you are not at a restaurant is an example of a butler lie.
(probably pseudo-) Latin for "swinging the lead"; British doctors' slang for malingering, or seeking a sick note to take time off work. I believe I saw this a while back in an old Eric Partridge slang dictionary. It may originally have been a British armed forces' slang term, equivalent to the U.S. goldbricking
I'm a fan of the origin of this phrase; it's an attribution to Julius Caesar (usually "alea iacta est"), supposedly stated as he gave the command to his army to begin crossing the river Rubicon, enter Roman territory, and thereby irrevocably commit to civil war. Thus also the phrase cross the Rubicon.
The Dunning–Kruger effect is a cognitive bias in which unskilled individuals suffer from illusory superiority, mistakenly rating their ability much higher than average. This bias is attributed to a metacognitive inability of the unskilled to recognize their mistakes.
so basically two consecutive palindromes (lexical or not) that can be concatenated to produce an acceptable word eg debedded. In fact, the simple plural of most single-word noun palindromes would be a circular palindrome: madams, ewes, rotators
"The surface of last scattering refers to the set of points in space at the right distance from us so that we are now receiving photons originally emitted from those points at the time of photon decoupling."
from Cosmic microwave background radiation on wikipedia
I find this a remarkable phrase on several levels